18=3(z-1)

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Solution for 18=3(z-1) equation:


18=3(z-1)

We simplify the equation to the form, which is simple to understand 
18=3(z-1)

Reorder the terms in parentheses
18=+(+3z-3)

Remove unnecessary parentheses
+18=+3z-3

We move all terms containing z to the left and all other terms to the right. 
-3z=-3-18

We simplify left and right side of the equation. 
-3z=-21

We divide both sides of the equation by -03 to get z. 
z=7

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