42=7(z-3)

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Solution for 42=7(z-3) equation:


42=7(z-3)

We simplify the equation to the form, which is simple to understand 
42=7(z-3)

Reorder the terms in parentheses
42=+(+7z-21)

Remove unnecessary parentheses
+42=+7z-21

We move all terms containing z to the left and all other terms to the right. 
-7z=-21-42

We simplify left and right side of the equation. 
-7z=-63

We divide both sides of the equation by -07 to get z. 
z=9

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