selesaikanlah a.10x-7=5x+5 b.2(x-6)=6 c.4(3x-6)=10x+12

a. 10x-7 = 5x+5
10x - 5x = 5+7
5x = 12
x = 12/5

b. 2x-12 = 6
2x = 6 + 12
2x = 18
x = 9

c. 12x-24 = 10x+12
12x-10x = 12 + 24
2x = 36
x = 18

a.
10x - 7 = 5x + 5
10x - 5x - 7 = 5x - 5x + 5
5x - 7 = 5
5x - 7 + 7 = 5 + 7
5x = 12
x = 12/5

b.
2(x - 6) = 6
2(x - 6) : 2 = 6 : 2
(x - 6) = 3
x - 6 + 6 = 3 + 6
x = 9

c.
4(3x - 6) = 10x + 12
12x - 24 = 10x + 12
12x - 10x - 24 = 10x - 10x + 12
2x - 24 = 12
2x - 24 + 24 = 12 + 24
2x = 36
x = 36/2
x = 18