31=q/2+21

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Solution for 31=q/2+21 equation: 



31=q/2+21

We move all terms to the left:

31-(q/2+21)=0

We get rid of parentheses

-q/2-21+31=0

We multiply all the terms by the denominator


-q-21*2+31*2=0

We add all the numbers together, and all the variables

-1q+20=0

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

-q=-20

q=-20/-1

q=+20

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