-7(3-z)=42

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



-7(3-z)=42

We move all terms to the left:

-7(3-z)-(42)=0

We add all the numbers together, and all the variables

-7(-1z+3)-42=0

We multiply parentheses

7z-21-42=0

We add all the numbers together, and all the variables

7z-63=0

We move all terms containing z to the left, all other terms to the right

7z=63

z=63/7

z=9

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