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(-3)=-7F+8
We move all terms to the left:
(-3)-(-7F+8)=0
We add all the numbers together, and all the variables
-(-7F+8)-3=0
We get rid of parentheses
7F-8-3=0
We add all the numbers together, and all the variables
7F-11=0
We move all terms containing F to the left, all other terms to the right
7F=11
F=11/7
F=1+4/7
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