3(2q-3)=21

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Solution for 3(2q-3)=21 equation: 



3(2q-3)=21

We move all terms to the left:

3(2q-3)-(21)=0

We multiply parentheses

6q-9-21=0

We add all the numbers together, and all the variables

6q-30=0

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

6q=30

q=30/6

q=5

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