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-f+2+4f=8-f
We move all terms to the left:
-f+2+4f-(8-f)=0
We add all the numbers together, and all the variables
-f+4f-(-1f+8)+2=0
We add all the numbers together, and all the variables
3f-(-1f+8)+2=0
We get rid of parentheses
3f+1f-8+2=0
We add all the numbers together, and all the variables
4f-6=0
We move all terms containing f to the left, all other terms to the right
4f=6
f=6/4
f=1+1/2
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