3(u+3)=18

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Solution for 3(u+3)=18 equation: 



3(u+3)=18

We move all terms to the left:

3(u+3)-(18)=0

We multiply parentheses

3u+9-18=0

We add all the numbers together, and all the variables

3u-9=0

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

3u=9

u=9/3

u=3

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