-18=-3u+7(u-6)

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Solution for -18=-3u+7(u-6) equation: 



-18=-3u+7(u-6)

We move all terms to the left:

-18-(-3u+7(u-6))=0



We calculate terms in parentheses: -(-3u+7(u-6)), so:

-3u+7(u-6)

We multiply parentheses

-3u+7u-42

We add all the numbers together, and all the variables

4u-42

Back to the equation:

-(4u-42)



We get rid of parentheses

-4u+42-18=0

We add all the numbers together, and all the variables

-4u+24=0

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

-4u=-24

u=-24/-4

u=+6

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