(z-13)=21

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Solution for (z-13)=21 equation: 



(z-13)=21

We move all terms to the left:

(z-13)-(21)=0

We get rid of parentheses

z-13-21=0

We add all the numbers together, and all the variables

z-34=0

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

z=34

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