7(z+5)=77

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Solution for 7(z+5)=77 equation: 



7(z+5)=77

We move all terms to the left:

7(z+5)-(77)=0

We multiply parentheses

7z+35-77=0

We add all the numbers together, and all the variables

7z-42=0

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

7z=42

z=42/7

z=6

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