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3.1q-4.2-3.8q=-1.7q-5.2
We move all terms to the left:
3.1q-4.2-3.8q-(-1.7q-5.2)=0
We add all the numbers together, and all the variables
-0.7q-(-1.7q-5.2)-4.2=0
We get rid of parentheses
-0.7q+1.7q+5.2-4.2=0
We add all the numbers together, and all the variables
q+1=0
We move all terms containing q to the left, all other terms to the right
q=-1
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