a) 2(3x-1)+3(x+4)=2(5x+6)
6x-2+3x+12=10x+12
9x-2=10x
x=-2
b) 5(4-x)-2(4x-3)=3(x-1)-7(2x+1)
20-5x-8x+6=3x-3-14x-7
26-13x=-11x-10
26+10=-11x+13x
2x=36
x=18
c) -3(3x+4)-6(2-x)=5(x-4)
-9x-12-12+6x=5x-20
-3x-24=5x-20
5x+3x=-24+20
8x=-4
x=-1/2
d) 8x-2(3x+5)-(2x-3)=4(x+1)-1
8x-6x-10-2x+3=4x+4-1
-7=4x+3
4x=-10
x=-10/4
x=-5/2
