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2.3=3f+4.3
We move all terms to the left:
2.3-(3f+4.3)=0
We get rid of parentheses
-3f-4.3+2.3=0
We add all the numbers together, and all the variables
-3f-2=0
We move all terms containing f to the left, all other terms to the right
-3f=2
f=2/-3
f=-2/3
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