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(-4)=5F-1
We move all terms to the left:
(-4)-(5F-1)=0
We add all the numbers together, and all the variables
-(5F-1)-4=0
We get rid of parentheses
-5F+1-4=0
We add all the numbers together, and all the variables
-5F-3=0
We move all terms containing F to the left, all other terms to the right
-5F=3
F=3/-5
F=-3/5
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