-3(u+5)=7u+15

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Solution for -3(u+5)=7u+15 equation: 



-3(u+5)=7u+15

We move all terms to the left:

-3(u+5)-(7u+15)=0

We multiply parentheses

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

We get rid of parentheses

-3u-7u-15-15=0

We add all the numbers together, and all the variables

-10u-30=0

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

-10u=30

u=30/-10

u=-3

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