5(x+8)-5=0
5(x+8)=5
x+8=5÷5=1
x=1-8
x=-7
2(3-x)=9
3-x=9÷2=4.5
x=3-4.5
x=-1.5
-3(x+3)=24
x+3=24÷(-3)=-8
x=-8-3
x=-11
-2(x-2)=12
x-2=12÷(-2)=-6
x=-6+2
x=-4