9+q=-9-2q

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Solution for 9+q=-9-2q equation: 



9+q=-9-2q

We move all terms to the left:

9+q-(-9-2q)=0

We add all the numbers together, and all the variables

q-(-2q-9)+9=0

We get rid of parentheses

q+2q+9+9=0

We add all the numbers together, and all the variables

3q+18=0

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

3q=-18

q=-18/3

q=-6

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