-3(u-7)=-7u-7

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Solution for -3(u-7)=-7u-7 equation: 



-3(u-7)=-7u-7

We move all terms to the left:

-3(u-7)-(-7u-7)=0

We multiply parentheses

-3u-(-7u-7)+21=0

We get rid of parentheses

-3u+7u+7+21=0

We add all the numbers together, and all the variables

4u+28=0

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

4u=-28

u=-28/4

u=-7

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