2q+21=39

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Solution for 2q+21=39 equation: 



2q+21=39

We move all terms to the left:

2q+21-(39)=0

We add all the numbers together, and all the variables

2q-18=0

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

2q=18

q=18/2

q=9

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