-18=15z-9[2z-2]

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Solution for -18=15z-9[2z-2] equation:


-18=15z-9[2z-2]

We simplify the equation to the form, which is simple to understand 
-18=15z-9(2z-2)

Reorder the terms in parentheses
-18=15z+(-18z+18)

Remove unnecessary parentheses
-18=+15z-18z+18

We move all terms containing z to the left and all other terms to the right. 
-15z+18z=+18+18

We simplify left and right side of the equation. 
+3z=+36

We divide both sides of the equation by 3 to get z. 
z=12

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