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

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



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

We move all terms to the left:

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

We multiply parentheses

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



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

-2(2u-9)+u

We add all the numbers together, and all the variables

u-2(2u-9)

We multiply parentheses

u-4u+18

We add all the numbers together, and all the variables

-3u+18

Back to the equation:

-(-3u+18)



We get rid of parentheses

3u+3u-18+21=0

We add all the numbers together, and all the variables

6u+3=0

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

6u=-3

u=-3/6

u=-1/2

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