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(-3)=-2F-11
We move all terms to the left:
(-3)-(-2F-11)=0
We add all the numbers together, and all the variables
-(-2F-11)-3=0
We get rid of parentheses
2F+11-3=0
We add all the numbers together, and all the variables
2F+8=0
We move all terms containing F to the left, all other terms to the right
2F=-8
F=-8/2
F=-4
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