-5(u-3)=-9u-21

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Solution for -5(u-3)=-9u-21 equation: 



-5(u-3)=-9u-21

We move all terms to the left:

-5(u-3)-(-9u-21)=0

We multiply parentheses

-5u-(-9u-21)+15=0

We get rid of parentheses

-5u+9u+21+15=0

We add all the numbers together, and all the variables

4u+36=0

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

4u=-36

u=-36/4

u=-9

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