-7u+3(u+2)=30

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Solution for -7u+3(u+2)=30 equation: 



-7u+3(u+2)=30

We move all terms to the left:

-7u+3(u+2)-(30)=0

We multiply parentheses

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

We add all the numbers together, and all the variables

-4u-24=0

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

-4u=24

u=24/-4

u=-6

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