-7=4u+3(u-7)

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Solution for -7=4u+3(u-7) equation: 



-7=4u+3(u-7)

We move all terms to the left:

-7-(4u+3(u-7))=0



We calculate terms in parentheses: -(4u+3(u-7)), so:

4u+3(u-7)

We multiply parentheses

4u+3u-21

We add all the numbers together, and all the variables

7u-21

Back to the equation:

-(7u-21)



We get rid of parentheses

-7u+21-7=0

We add all the numbers together, and all the variables

-7u+14=0

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

-7u=-14

u=-14/-7

u=+2

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