q=-2q+21*

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Solution for q=-2q+21* equation: 



q=-2q+21*

We move all terms to the left:

q-(-2q+21*)=0

We add all the numbers together, and all the variables

q-(-2q)=0

We get rid of parentheses

q+2q=0

We add all the numbers together, and all the variables

3q=0

q=0/3

q=0

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