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-7f/2=-1
We move all terms to the left:
-7f/2-(-1)=0
We add all the numbers together, and all the variables
-7f/2+1=0
We multiply all the terms by the denominator
-7f+1*2=0
We add all the numbers together, and all the variables
-7f+2=0
We move all terms containing f to the left, all other terms to the right
-7f=-2
f=-2/-7
f=2/7
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