(Q-21)=(q)+7

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Solution for (Q-21)=(q)+7 equation: 



(-21)=(Q)+7

We move all terms to the left:

(-21)-((Q)+7)=0

We add all the numbers together, and all the variables

-(Q+7)-21=0

We get rid of parentheses

-Q-7-21=0

We add all the numbers together, and all the variables

-1Q-28=0

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

-Q=28

Q=28/-1

Q=-28

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