-3(u+7)=6u+15

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Solution for -3(u+7)=6u+15 equation: 



-3(u+7)=6u+15

We move all terms to the left:

-3(u+7)-(6u+15)=0

We multiply parentheses

-3u-(6u+15)-21=0

We get rid of parentheses

-3u-6u-15-21=0

We add all the numbers together, and all the variables

-9u-36=0

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

-9u=36

u=36/-9

u=-4

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