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7=2.34f-20
We move all terms to the left:
7-(2.34f-20)=0
We get rid of parentheses
-2.34f+20+7=0
We add all the numbers together, and all the variables
-2.34f+27=0
We move all terms containing f to the left, all other terms to the right
-2.34f=-27
f=-27/-2.34
f=11+1/1.8571428571429
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