A) 3x - 8 = 2x + 4 /+8
3x=2x+12/-2x
x=12
B) 5x - 3 = 4x + 6/+3
5x=4x+9/-4x
x=9
C) 7x - 9 = 6x - 8/+9
7x=6x+1/-6x
x=1
D) 7x - 5 = 6x + 8/+5
7x=6x+13/-6x
x=13
E) 5x - 8 = 4x + 9/+8
5x=4x+17/-4x
x=17
F) 9x - 4 = 8x + 5/+4
9x=8x+9/-8x
x= 9
G) 12x - 4 = 11x + 15/+4
12x=11x+19/-11x
x=19
H) 3x - 1 = 2x + 1/+1
3x=2x+2/-2x
x=2
I) 2x + 7 = x - 1/-7
2x=x-8/-x
x=-8