(3-z)=42

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Solution for (3-z)=42 equation: 



(3-z)=42

We move all terms to the left:

(3-z)-(42)=0

We add all the numbers together, and all the variables

(-1z+3)-42=0

We get rid of parentheses

-1z+3-42=0

We add all the numbers together, and all the variables

-1z-39=0

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

-z=39

z=39/-1

z=-39

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