7(u+4)=-2(3u-9)+9u

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Solution for 7(u+4)=-2(3u-9)+9u equation: 



7(u+4)=-2(3u-9)+9u

We move all terms to the left:

7(u+4)-(-2(3u-9)+9u)=0

We multiply parentheses

7u-(-2(3u-9)+9u)+28=0



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

-2(3u-9)+9u

We add all the numbers together, and all the variables

9u-2(3u-9)

We multiply parentheses

9u-6u+18

We add all the numbers together, and all the variables

3u+18

Back to the equation:

-(3u+18)



We get rid of parentheses

7u-3u-18+28=0

We add all the numbers together, and all the variables

4u+10=0

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

4u=-10

u=-10/4

u=-2+1/2

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