-9q=-7q-20

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Solution for -9q=-7q-20 equation: 



-9q=-7q-20

We move all terms to the left:

-9q-(-7q-20)=0

We get rid of parentheses

-9q+7q+20=0

We add all the numbers together, and all the variables

-2q+20=0

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

-2q=-20

q=-20/-2

q=+10

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