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-45=-6-3f-4
We move all terms to the left:
-45-(-6-3f-4)=0
We add all the numbers together, and all the variables
-(-3f-10)-45=0
We get rid of parentheses
3f+10-45=0
We add all the numbers together, and all the variables
3f-35=0
We move all terms containing f to the left, all other terms to the right
3f=35
f=35/3
f=11+2/3
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