(q-4)*3=21

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Solution for (q-4)*3=21 equation: 



(q-4)*3=21

We move all terms to the left:

(q-4)*3-(21)=0

We multiply parentheses

3q-12-21=0

We add all the numbers together, and all the variables

3q-33=0

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

3q=33

q=33/3

q=11

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