3(u+7)=9u+9

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



3(u+7)=9u+9

We move all terms to the left:

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

We multiply parentheses

3u-(9u+9)+21=0

We get rid of parentheses

3u-9u-9+21=0

We add all the numbers together, and all the variables

-6u+12=0

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

-6u=-12

u=-12/-6

u=+2

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