3(u+6)=-3+42

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Solution for 3(u+6)=-3+42 equation: 



3(u+6)=-3+42

We move all terms to the left:

3(u+6)-(-3+42)=0

We add all the numbers together, and all the variables

3(u+6)-39=0

We multiply parentheses

3u+18-39=0

We add all the numbers together, and all the variables

3u-21=0

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

3u=21

u=21/3

u=7

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