-9=2q+q

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Solution for -9=2q+q equation: 



-9=2q+q

We move all terms to the left:

-9-(2q+q)=0

We add all the numbers together, and all the variables

-(+3q)-9=0

We get rid of parentheses

-3q-9=0

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

-3q=9

q=9/-3

q=-3

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