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-f+2+-4f=8-3f=f
We move all terms to the left:
-f+2+-4f-(8-3f)=0
We add all the numbers together, and all the variables
-f-4f-(-3f+8)+2+=0
We add all the numbers together, and all the variables
-5f-(-3f+8)=0
We get rid of parentheses
-5f+3f-8=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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