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8.9-1.4q=q-11.5
We move all terms to the left:
8.9-1.4q-(q-11.5)=0
We get rid of parentheses
-1.4q-q+11.5+8.9=0
We add all the numbers together, and all the variables
-2.4q+20.4=0
We move all terms containing q to the left, all other terms to the right
-2.4q=-20.4
q=-20.4/-2.4
q=8+1/2
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