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-7.94+17.7f=20f+4.3-1.4f
We move all terms to the left:
-7.94+17.7f-(20f+4.3-1.4f)=0
We add all the numbers together, and all the variables
17.7f-(18.6f+4.3)-7.94=0
We get rid of parentheses
17.7f-18.6f-4.3-7.94=0
We add all the numbers together, and all the variables
-0.9f-12.24=0
We move all terms containing f to the left, all other terms to the right
-0.9f=12.24
f=12.24/-0.9
f=-13+0.54/0.9
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