3(u+7)=-6(4u-6)+9u

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Solution for 3(u+7)=-6(4u-6)+9u equation: 



3(u+7)=-6(4u-6)+9u

We move all terms to the left:

3(u+7)-(-6(4u-6)+9u)=0

We multiply parentheses

3u-(-6(4u-6)+9u)+21=0



We calculate terms in parentheses: -(-6(4u-6)+9u), so:

-6(4u-6)+9u

We add all the numbers together, and all the variables

9u-6(4u-6)

We multiply parentheses

9u-24u+36

We add all the numbers together, and all the variables

-15u+36

Back to the equation:

-(-15u+36)



We get rid of parentheses

3u+15u-36+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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