3(u+7)=-3(8u-2)+9u

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Solution for 3(u+7)=-3(8u-2)+9u equation: 



3(u+7)=-3(8u-2)+9u

We move all terms to the left:

3(u+7)-(-3(8u-2)+9u)=0

We multiply parentheses

3u-(-3(8u-2)+9u)+21=0



We calculate terms in parentheses: -(-3(8u-2)+9u), so:

-3(8u-2)+9u

We add all the numbers together, and all the variables

9u-3(8u-2)

We multiply parentheses

9u-24u+6

We add all the numbers together, and all the variables

-15u+6

Back to the equation:

-(-15u+6)



We get rid of parentheses

3u+15u-6+21=0

We add all the numbers together, and all the variables

18u+15=0

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

18u=-15

u=-15/18

u=-5/6

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