1:x/7-2=x
-6x/7=2
-6x=14
x=-7/3
2:7x-8=11x-4
-4x=4
x=-1
3:2.5+7.5x=11x-4
-3.5x=-6.5
x=13/7
4:3-(4x-3)=6
3-4x+3=6
-4x=0
x=0
5:2x+6=2-(1+x)
2x+6=2-1-x
3x=-5
x=-5/3
6:3x-(4x-5)=6+(2-5x)
3x-4x+5=6+2-5x
4x=3
x=3/4
5:5x-3(2x-1)=11
5x-6x+3=11
-x=8
x=-8
6:2(3/2x-6)-3(2x-7/3)=5(x-1)
3x-12-6x+7=5x-5
-8x=0
x=0
7:3-(2x-1)=2(x+1)
3-2x+1=2x+2
-4x=-2
x=1/2