83=4q+21

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Solution for 83=4q+21 equation: 



83=4q+21

We move all terms to the left:

83-(4q+21)=0

We get rid of parentheses

-4q-21+83=0

We add all the numbers together, and all the variables

-4q+62=0

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

-4q=-62

q=-62/-4

q=15+1/2

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