tentukan himpunan penyelesaian dari 1.)12+3x=5+2x 2.)3(x+2)=2(x+5) 3.)5(x-1)=4x 4.)3(3-2x)=15-7x 5.)8-(2-4x)=7x-1 6.)5x+7(3x+2)=6(4x+1) 7.)2x+1=x-3 8.)-2x+5=(x+

1) 12 + 3x = 5 + 2x
3x - 2x = 5 - 12
x = - 7

2) 3(x + 2) = 2 (x + 5)
3x + 6 = 2x + 10
3x - 2x = 10 - 6
x = 4

3) 5 (x - 1) = 4x
5x - 5 = 4x
5x - 4x = 5
x = 5

4) 3 (3 - 2x) = 15 - 7x
9 - 6x = 15 - 7x
- 6x + 7x = 15 - 9
x = 6

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

6) 5x + 7(3x + 2) = 6 (4x + 1)
5x + 21x + 14 = 24x + 6
26x + 14 = 24x + 6
26x - 24x = 6 - 14
2x = - 8
x = - 4

7) 2x + 1 = x - 3
2x - x = -3 - 1
x = - 4

8) - 2x + 5 = x + 9
- 2x - x = 9 - 5
- 3x = - 4
x = 4/3