4=7u+3(u-4)

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



4=7u+3(u-4)

We move all terms to the left:

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



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

7u+3(u-4)

We multiply parentheses

7u+3u-12

We add all the numbers together, and all the variables

10u-12

Back to the equation:

-(10u-12)



We get rid of parentheses

-10u+12+4=0

We add all the numbers together, and all the variables

-10u+16=0

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

-10u=-16

u=-16/-10

u=1+3/5

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