-7=2u+9

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Solution for -7=2u+9 equation: 



-7=2u+9

We move all terms to the left:

-7-(2u+9)=0

We get rid of parentheses

-2u-9-7=0

We add all the numbers together, and all the variables

-2u-16=0

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

-2u=16

u=16/-2

u=-8

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