21=q+11

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Solution for 21=q+11 equation: 



21=q+11

We move all terms to the left:

21-(q+11)=0

We get rid of parentheses

-q-11+21=0

We add all the numbers together, and all the variables

-1q+10=0

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

-q=-10

q=-10/-1

q=+10

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