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4.1f+6.2-5.3f=-8.1f+6.89
We move all terms to the left:
4.1f+6.2-5.3f-(-8.1f+6.89)=0
We add all the numbers together, and all the variables
-1.2f-(-8.1f+6.89)+6.2=0
We get rid of parentheses
-1.2f+8.1f-6.89+6.2=0
We add all the numbers together, and all the variables
6.9f-0.69=0
We move all terms containing f to the left, all other terms to the right
6.9f=0.69
f=0.69/6.9
f=0.69/6.9
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