3=7u+8(u+6)

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Solution for 3=7u+8(u+6) equation: 



3=7u+8(u+6)

We move all terms to the left:

3-(7u+8(u+6))=0



We calculate terms in parentheses: -(7u+8(u+6)), so:

7u+8(u+6)

We multiply parentheses

7u+8u+48

We add all the numbers together, and all the variables

15u+48

Back to the equation:

-(15u+48)



We get rid of parentheses

-15u-48+3=0

We add all the numbers together, and all the variables

-15u-45=0

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

-15u=45

u=45/-15

u=-3

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