10u+8+9=-3u+7(3u-9)

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Solution for 10u+8+9=-3u+7(3u-9) equation: 



10u+8+9=-3u+7(3u-9)

We move all terms to the left:

10u+8+9-(-3u+7(3u-9))=0

We add all the numbers together, and all the variables

10u-(-3u+7(3u-9))+17=0



We calculate terms in parentheses: -(-3u+7(3u-9)), so:

-3u+7(3u-9)

We multiply parentheses

-3u+21u-63

We add all the numbers together, and all the variables

18u-63

Back to the equation:

-(18u-63)



We get rid of parentheses

10u-18u+63+17=0

We add all the numbers together, and all the variables

-8u+80=0

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

-8u=-80

u=-80/-8

u=+10

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