84=6(u+3)

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Solution for 84=6(u+3) equation: 



84=6(u+3)

We move all terms to the left:

84-(6(u+3))=0



We calculate terms in parentheses: -(6(u+3)), so:

6(u+3)

We multiply parentheses

6u+18

Back to the equation:

-(6u+18)



We get rid of parentheses

-6u-18+84=0

We add all the numbers together, and all the variables

-6u+66=0

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

-6u=-66

u=-66/-6

u=+11

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