30=3(u+7)+6u

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Solution for 30=3(u+7)+6u equation: 



30=3(u+7)+6u

We move all terms to the left:

30-(3(u+7)+6u)=0



We calculate terms in parentheses: -(3(u+7)+6u), so:

3(u+7)+6u

We add all the numbers together, and all the variables

6u+3(u+7)

We multiply parentheses

6u+3u+21

We add all the numbers together, and all the variables

9u+21

Back to the equation:

-(9u+21)



We get rid of parentheses

-9u-21+30=0

We add all the numbers together, and all the variables

-9u+9=0

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

-9u=-9

u=-9/-9

u=1

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