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(-3)=5F-9
We move all terms to the left:
(-3)-(5F-9)=0
We add all the numbers together, and all the variables
-(5F-9)-3=0
We get rid of parentheses
-5F+9-3=0
We add all the numbers together, and all the variables
-5F+6=0
We move all terms containing F to the left, all other terms to the right
-5F=-6
F=-6/-5
F=1+1/5
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