3(u+7)+6u=12

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Solution for 3(u+7)+6u=12 equation: 



3(u+7)+6u=12

We move all terms to the left:

3(u+7)+6u-(12)=0

We add all the numbers together, and all the variables

6u+3(u+7)-12=0

We multiply parentheses

6u+3u+21-12=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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