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3(z-1)=-3
We simplify the equation to the form, which is simple to understand
3(z-1)=-3
Reorder the terms in parentheses
+(+3z-3)=-3
Remove unnecessary parentheses
+3z-3=-3
We move all terms containing z to the left and all other terms to the right.
+3z=-3+3
We simplify left and right side of the equation.
+3z=0
We divide both sides of the equation by 3 to get z.
z=0
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