7(u+1)=77

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Solution for 7(u+1)=77 equation: 



7(u+1)=77

We move all terms to the left:

7(u+1)-(77)=0

We multiply parentheses

7u+7-77=0

We add all the numbers together, and all the variables

7u-70=0

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

7u=70

u=70/7

u=10

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