-12=4u+4(u-7)

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Solution for -12=4u+4(u-7) equation: 



-12=4u+4(u-7)

We move all terms to the left:

-12-(4u+4(u-7))=0



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

4u+4(u-7)

We multiply parentheses

4u+4u-28

We add all the numbers together, and all the variables

8u-28

Back to the equation:

-(8u-28)



We get rid of parentheses

-8u+28-12=0

We add all the numbers together, and all the variables

-8u+16=0

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

-8u=-16

u=-16/-8

u=+2

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