求解这六道解方程题5(x-4)=84-3(x-2)=124x-2(3-6x)=40-60(x+2)=1205(x-1)-2=10-3(x-2)=-18一定要用上去括号移向变号之类的

Question

求解这六道解方程题
5(x-4)=8 4-3(x-2)=12 4x-2(3-6x)=40 -60(x+2)=120 5(x-1)-2=10 -3(x-2)=-18
一定要用上去括号 移向 变号之类的

Answer 1

5(x-4)=8
5x-20=8
5x=8+20
5x=28
x=28÷5
x=5.6
4-3(x-2)=12
4-3x+6=12
10-3x=12
3x=10-12
3x=-2
x=-2/3
4x-2(3-6x)=40
4x-6+12x=40
16x=40+6
16x=46
x=2.875
-60(x+2)=120
-60x-120=120
-60x=120+120
-60x=240
x=-4
5(x-1)-2=10
5x-5-2=10
5x-7=10
5x=10+7
5x=17
x=17/5
-
3(x-2)=-18
3x-6=-18
3x=-18+6
3x=-12
x=-4