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

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



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

We move all terms to the left:

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



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

-7u+4(u+3)

We multiply parentheses

-7u+4u+12

We add all the numbers together, and all the variables

-3u+12

Back to the equation:

-(-3u+12)



We get rid of parentheses

3u-12-3=0

We add all the numbers together, and all the variables

3u-15=0

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

3u=15

u=15/3

u=5

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