q-9=-2q

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Solution for q-9=-2q equation: 



q-9=-2q

We move all terms to the left:

q-9-(-2q)=0

We get rid of parentheses

q+2q-9=0

We add all the numbers together, and all the variables

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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