21q-7q=42

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Solution for 21q-7q=42 equation: 



21q-7q=42

We move all terms to the left:

21q-7q-(42)=0

We add all the numbers together, and all the variables

14q-42=0

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

14q=42

q=42/14

q=3

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