Wawasan Genius

(1) 2(x - 5) + 1 = 7 (3) -2(x + 3) = 5x + 8 (2) 4x - 7(x+2) =-5. (4) 3(x-8)= -6(x + 4)​

1. (1) 2(x - 5) + 1 = 7 (3) -2(x + 3) = 5x + 8 (2) 4x - 7(x+2) =-5. (4) 3(x-8)= -6(x + 4)​

Penjelasan dengan langkah-langkah:

1)

2(x - 5) + 1 = 7

2x - 10 + 1 = 7

2x - 9 = 7

2x = 7 + 9

2x = 16

x = 8

2)

-2(x + 3) = 5x + 8

-2x - 6 = 5x + 8

-2x - 5x = 8 + 6

-7x = 14

x = -2

3)

4x - 7(x + 2) = -5

4x - 7x - 14 = -5

-3x - 14 = -5

-3x = -5 + 14

-3x = 9

x = -3

4)

3(x - 8) = -6(x + 4)

3x - 24 = -6x - 24

3x - (-6x) = -24 + 24

9x = 0

x = 0

2. Tentukan himpunan penyelesaiannya!1.[7-x]=22.[x+5] =43.[9-4x]=14.[2x+3]=55.[5x-2]=86.[x+5]=[x-3]7.[5x-2]=[x-6]8.[3x+5]=[x+7]9.[5x+2)=[7-3x]10.[15-4x]=[7-2x]​

Jawaban:

1. 7-x = 2

-x = -7+2

-x = -5

x = 5

2. x+5 = 4

x = 4-5

x = -1

3. 9-4x = 1

-4x = 1-9

-4x = -8

x = -8/-4

x = 2

4. 2x+3 = 5

2x = 5-3

x = -2/2

x = 0

5. 5x-2 = 8

5x = 8+2

x = 10/5

x = 2

3. Soal 4 Selesaikanlah. (1) 2(x-5)+1=7 (3) -2(x+3)=5x+8 (2) 4x-7(x + 2) = -5 (4) 3(x-8)= -6(x+4)​

2(x - 5) + 1 = 7

2x - 10 + 1 = 7

2x = 7 + 10 - 1

2x = 17 - 1

2x = 16

x = 16/2

x = 8

-2(x + 3) = 5x + 8

-2x - 6 = 5x + 8

-2x - 5x = 8 + 6

-7x = 14

-x = 14/7

-x = 2

x = -2

4x - 7(x + 2) = -5

4x - 7x - 14 = -5

4x - 7x = -5 + 14

-3x = 9

-x = 9/3

-x = 3

x = -3

-3(x - 8) = -6(x + 4)

-3x + 24 = -6x - 24

-3x + 6x = -24 - 24

3x = -48

x = -48/3

x = -16

4. 1. 2x+|4x-5|=8 2. 3x-|-5x+5|=12 3. |x|+|2+3|=7 4. |x-2|=2-x

soalnya apa? suruh di apain1. 28 + -20=8?.........

5. 3. (12x - 4) (2x - 2) = 4. (6x - 12) (x + 3) = 5. (2x - 5) (x² + 3x - 4) = 6.(4x + 1) (4x² + 5x + 1) =7. (5x - 2) (5x - 2) =8. (3x + 5) (3x - 5) =9. (5x - 2) (5x + 2) =​

MaPel : Matematika

Materi : Persamaan Kuadrat

Kelas : VIII

Jawab:

3) (12x-4)(2x-2)

=12x²-24x-8x+8

=12x²-32x+8

4)(6x-12)(x+3)

=6x²+18x-12x-36

=6x²+6x+36

5)(2x-5)(x²+3x-4)

=2x³+6x²-8x-5x²-15x+20

=2x³+6x²-5x²-8x-15x+20

=2x³+x²-23x+20

6)(4x+1)(4x²+5x+1)

=16x³+20x²+4x+4x²+5x+1

=16x³+20x²+4x²+4x+5x+1

=16x³+24x²+9x+1

7)(5x-2)(5x-2)

=25x²-10x-10x+4

=25x²-20x+4

8)(3x+5)(3x-5)

=9x²-15x+15x-25

=9x²-25

9)(5x-2)(5x+2)

=25x²+10x-10x-4

=25x²-4

Maaf kalau salah.

6. 1.) 2(x-5) +1=7 2.)4x-7 (x+2)= -5 3.) -2 (x+3)= 5x+8 4.) 3 (x-8) = -6 ( x+4 ) tolong cari nilai x ya ​

Jawab:

Penjelasan dengan langkah-langkah:

7. 1. 5x+7=2x 2. 6x-8=4x 3. 4x+3=17x+12 4. 5x-2=3x+10 5. 3x-6=-x+6 6. 2(x+8)=4x+16 7. 3(x-2)=x-12 8. 2/3(x+1)-2(x-1)=-1/2(x+3)

1. 5x+7=2x
5x-2x = -7
3x=-7
x=-7/3

2. 6x-8=4x
6x-4x=8
2x=8
x=8/2
x=4

3. 4x+3=17x+12
4x-17x=12-3
-13x=9
x = 9/13

4. 5x-2=3x+10
5x-3x=20+2
2x=22
x=22/2
x=11

5. 3x-6=-x+6
3x+x=6+6
4x=12
x=12/4
x=3

6. 2(x+8) =4x+16
2x+16=4x+16
2x-4x=16-16
-2x=0
x=0

7. 3(x-2)=x-12
3x-6=x-12
3x-x=12+6
2x=18
x=18/2
x=9

8. aku lupa caranyaT.T

8. 1) 2x - 5 = -x + 12) 4x + 12 = 2x - 63) 4 - 5x = 7 + 3x4) 5/2x - 8 = 3/4x - 65) 3/5x + 4 = 6 - 2/3x​

sekian jawaban saya terimakasih maaf kalo salah

9. 1. 5x+2=32.4x+8=123.6x-7=114.X+12=55.4x-5=27​

Nomor 1.5x + 2 = 35x = 3 - 25x = 1x = 1/5

Nomor 2.4x + 8 = 124x = 12 - 84x = 4x = 4/4x = 1

Nomor 3.6x - 7 = 116x = 11 + 76x = 18x = 18/6x = 3

Nomor 4.x + 12 = 5x = 5 - 12x = -7

Nomor 5.4x - 5 = 274x = 27 + 54x = 32x = 32/4x = 8

[tex]\colorbox{pink}{\blue{ \boxed{ \tt{ \color{magenta}{maghfi24}♡}}}}[/tex]

10. jawaban memakai cara !!! Selesaikan PLSV dibawah ini : 1. 2x - 3 = x + 4 2. x - 1 = 2x - 4 3. 3x + 2 = 2x - 1 4. 4x + 2 = 5x + 5 5. 2x - 7 = 4x + 7 6. x + 5 = 14 - 2x 7. x - 6 = 5x + 6 8. 10 - 2x = 1 - 5x

Jawab:

~ MATH

1. 2x - 3 = x + 4

2x - x = 4 + 3

x = 7

2. x - 1 = 2x - 4

x - 2x = - 4 + 1

-x = -3

x = 3

3. 3x + 2 = 2x - 1

3x - 2x = -1 - 2

x = -3

4. 4x + 2 = 5x + 5

4x - 5x = 5 - 2

-x = 3

x = -3

5. 2x - 7 = 4x + 7

2x - 4x = 7 + 7

-2x = 14

x = -7

6. x + 5 = 14 - 2x

x + 2x = 14 - 5

3x = 9

x = 3

7. x - 6 = 5x + 6

x - 5x = 6 + 6

-4x = 12

x = -3

8. 10 - 2x = 1 - 5x

5x - 2x = 1 - 10

3x = -9

x = -3

11. 1. 3x-4+4x=8+4x 2. 5(x-1)=4x 3. 5x+7(3x+2)=6(4x-1)

® 3x-4+4x = 8+4x
3x+4x-4x = 8+4
3x/3 = 12/3
x = 6
® 5 (x-1) = 4x+3
5x-5 = 4x+3
5x-4 = 3+5
x = 8
® 5x+7 (3x+2) = 6 (4x - 1)
5x+21x+14 = 24x-6
5x+21x-24x = 14-6
2x/2 = 8/2
x = 4

12. 1. |4x-3|+2=82.|3x-4|-2=-53. 3|5x-6|=|4x+7|4. 2x+|4x-1|=65. 3+|2x-1|=x​

Penjelasan dengan langkah-langkah:

Soal (i)

|4x - 3| + 2 = 8

|4x - 3| = 8 - 2

|4x - 3| = 6

|4x - 3| = 6. V. |4x - 3| = -6

4x = 6 + 3. V. 4x = -6 + 3

4x = 9. V. 4x = -3

{x=9/4.V.x=-3/4}

13. 1. 15 (x+3) + 4 = 12x+672. 8 (2x-3) +5=3 (5x+4)+73. 4 (3x-2=7 (4x-8)​

Jawaban:

1.

15(x + 3) + 4 = 12x + 67

15x + 45 + 4 = 12x + 67

15x + 49 = 12x + 67

15x - 12x = 67 - 49

3x = 18

x = 18/3

x = 6

2.

8(2x - 3) + 5 = 3(5x + 4) + 7

16x - 24 + 5 = 15x + 12 + 7

16x - 19 = 15x + 19

16x - 15x = 19 + 19

x = 38

3.

4(3x - 2) = 7(4x - 8)

12x - 8 = 28x - 56

1 2x - 28x = -56 + 8

-16x = -48

x = -48/-16

x = 3

14. Tentukan himpunan penyelesaiannya 1. |x + 4| ≤ 2 2. |7 - 3x| < 1 3. |8 - 5x| < |x + 2| 4. |5 - x| ≤ 3 5. |3x - 7| < 2 6. |x + 5| ≤ |x - 3| 7. |4x - 1| < |2x + 3| 8. |7 - 5x| ≤ |9 - 2x|

1.(-2,-3,-4,-5,.....)
2.(2)
3.

15. 1. 2(x - 5) + 1 = 72. 4x - 7(x + 2)=-53. -2(x + 3)= 5x+84. 3(x - 8)= -6(x +4)BANTU JAWAB SOAL NYA DI KUMPULIN BESOK ​

NOMOR1.

2(x - 5) + 1 = 72x - 10 + 1 = 72x - 9 = 72x = 7 - (-9)2x = 7 + 92x = 16x = 16/2 >>>>>> x = 8

NOMOR2.

4x - 7(x + 2) = -54x - 7x - 14 = -5-3x - 14 = -5-3x = 14 - 5-3x = 9x = 9/(-3) >>>>>> x = -3

NOMOR3.

-2(x + 3) = 5x + 8-2x - 6 = 5x + 8-2x - 5x = 8 - (-6)-7x = 8 + 6-7x = 14x = 14/(-7) >>>>>> x = -2

NOMOR4.

3(x - 8) = -6(x + 4)3x - 24 = -6x - 243x - (-6x) = 24 - 243x + 6x = 09x = 0x = 0/9 >>>>>> x = 0

16. jawaban memakai cara !!! Selesaikan PLSV dibawah ini : 1. 2x - 3 = x + 4 2. x - 1 = 2x - 4 3. 3x + 2 = 2x - 1 4. 4x + 2 = 5x + 5 5. 2x - 7 = 4x + 7 6. x + 5 = 14 - 2x 7. x - 6 = 5x + 6 8. 10 - 2x = 1 - 5x

Penjelasan dengan langkah-langkah:

1. 2x-3=x+4

2x-x-3-4= 0

x-7=0

2. x-1=2x-4

x-2x-1+4=0

-x+3=0

3. 3x+2=2x-1

3x-2x+2+1=0

x+3=0

4. 4x+2= 5x+5

4x-5x+2-5=0

-x-3=0

5. 2x-7= 4x+7

-2x-4x-7-7=0

-6x-14=0

6. X+5= 14-2x

x+2x+5-14=0

3x-7=0

7. x-6= 5x+6

x-5x-6-6=0

-4x-12=0

-x-3=0

8. 10-2x= 1-5x

-2x+5x+10-1=0

3x+9=0

x+3=0

17. Tuliskan dan tentukan himpunan penyelesaian persam1. X +(-5) = 122. 5(x-1)=4x3. 5x+7 (3x + 2) = 6 (4x + 1)4. 7(5x – 2) - 9(3x+1)=5 (3x-8) - 45. -2x+5=-(x+9)​

Jawaban:

1. x = 17

2. x = 5

3. 15x² + 17x + 8 = 0 or 15x² + 17x = -8

4. x = 3/7

5. x = 14

Penjelasan dengan langkah-langkah:

1. x - 5 = 12

x = 12 + 5 = 17

2. 5x - 5= 4x

5x - 4x = 5

x=5

3. 15x² + 10x + 21x + 14 = 24x + 6

15x² + 31x - 24x = 6 - 14

15x² + 17x = -8

4. 35x - 14 - 27x - 9 = 15x - 40 - 4

8x - 15x = -44 + 41

-7x = -3

x = 3/7

5. -2x + 5 = -x - 9

-x = -14

x = 14

18. Kerjakan soal-soal di bawah ini dengan baik! 1. |7 - x| = 3 2. |x + 3| = 4 3. |5x - 3| = 7 4. |7 - 2x| = 3 5. |x + 5| = |2x + 3| 6. |5x - 2| = |x - 6| 7. |5x + 2| = |7 - 3x| 8. |15 - 4x| = | 7 - 2x|

Jawaban:

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19. - SOAL PLSV - a. 3x - 2 + 4x = 8 + 4x b. 5(x-1) = 4x c. 5x + 7 (3x + 2) = 6 (4x + 1) d. 7 (5x - 2) - 9 (3x + 1) = 5 (3x - 8) - 4 e. 2 (5 - 2x) = 3 (5 - x)

a. 3x -2 + 4x = 8 + 4x
3x - 4x= 8 +2
-x = 10
x= -10

b. 5 (x-1) =4x
5x-5 = 4x
-5 = 4x - 5x
-5 = -x
x= 5

e. 2 (5 - 2x) = 3 (5 - x)
10 - 4x = 15 - 3x
10-15 = -3x +4x
-5 = x
x= -5

20. Linear 1 dan variabelTugas:Tentukan nilai X dari soal dibawah ini!1. x + (-5) = 122. 3x - 2 + 4x = 8 + 4x3. 5 (x-1) = 4x4. 5x + 7 (3x + 2)5. 7 (5x - 2) - 9 (3x + 1) = 5 (3x - 8) - 4Mohon segera dijawab yaa​

1. x + (-5) = 12

x - 5 = 12

x = 12 + 5

x = 17

2. 3x - 2 + 4x = 8 + 4x

7x - 2 = 8 + 4x

7x - 4x = 8 + 2

3x = 10

x = 10/3

3. 5 (x-1) = 4x

5x - 5 = 4x

5x - 4x = 5

x = 5

4. 5x + 7 (3x + 2)

5x + 21x + 14

26x + 14

5. 7 (5x - 2) - 9 (3x + 1) = 5 (3x - 8) - 4

35x - 14 - 27x - 9 = 15x - 40 - 4

8x - 23 = 15x - 44

8x - 15x = -44 + 23

-7x = -21

x = -21/-7

x = 3