1)7x-5=x+7
7x-x=7+5
6x=12
x=12:6
x=2
2)10(8x-5)=110
80x-50=110
80x=110+50
80x=160
x=160:80
3) 2-2(x-1)=4(x-2)
2-2x-2=4x-8
-2x-4x=-8-2-2
-6x=-12
x=-12:(-6)
1)7x-5=x+7
7x-x=7+5
6x=12
x=12:6
x=2
2)10(8x-5)=110
80x-50=110
80x=110+50
80x=160
x=160:80
x=2
3) 2-2(x-1)=4(x-2)
2-2x-2=4x-8
-2x-4x=-8-2-2
-6x=-12
x=-12:(-6)
x=2