(1)2-(1-z)=-2
2-1+z=-2
1+z=-2
x=-3
(2)5(x+8)-5=6(2x-7)
5x+40-5=12x-42
-7x=-77
x=11
(3)2(3y-4)+7(4-y)=4y
6y-8+28-7y=4y
-5y=-20
y=4
(1)2-(1-z)=-2
2-1+z=-2
1+z=-2
x=-3
(2)5(x+8)-5=6(2x-7)
5x+40-5=12x-42
-7x=-77
x=11
(3)2(3y-4)+7(4-y)=4y
6y-8+28-7y=4y
-5y=-20
y=4