3(u+9)=7u+15

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Solution for 3(u+9)=7u+15 equation: 



3(u+9)=7u+15

We move all terms to the left:

3(u+9)-(7u+15)=0

We multiply parentheses

3u-(7u+15)+27=0

We get rid of parentheses

3u-7u-15+27=0

We add all the numbers together, and all the variables

-4u+12=0

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

-4u=-12

u=-12/-4

u=+3

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