3(z-7)=21

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Solution for 3(z-7)=21 equation:


3(z-7)=21

We simplify the equation to the form, which is simple to understand 
3(z-7)=21

Reorder the terms in parentheses
+(+3z-21)=21

Remove unnecessary parentheses
+3z-21=+21

We move all terms containing z to the left and all other terms to the right. 
+3z=+21+21

We simplify left and right side of the equation. 
+3z=+42

We divide both sides of the equation by 3 to get z. 
z=14

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