21(z+13)=315

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Solution for 21(z+13)=315 equation: 



21(z+13)=315

We move all terms to the left:

21(z+13)-(315)=0

We multiply parentheses

21z+273-315=0

We add all the numbers together, and all the variables

21z-42=0

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

21z=42

z=42/21

z=2

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