-7u+5(u+7)=15

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Solution for -7u+5(u+7)=15 equation: 



-7u+5(u+7)=15

We move all terms to the left:

-7u+5(u+7)-(15)=0

We multiply parentheses

-7u+5u+35-15=0

We add all the numbers together, and all the variables

-2u+20=0

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

-2u=-20

u=-20/-2

u=+10

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