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-4f+15f=1+16f
We move all terms to the left:
-4f+15f-(1+16f)=0
We add all the numbers together, and all the variables
-4f+15f-(16f+1)=0
We add all the numbers together, and all the variables
11f-(16f+1)=0
We get rid of parentheses
11f-16f-1=0
We add all the numbers together, and all the variables
-5f-1=0
We move all terms containing f to the left, all other terms to the right
-5f=1
f=1/-5
f=-1/5
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