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(4f+5)-3f=11
We move all terms to the left:
(4f+5)-3f-(11)=0
We add all the numbers together, and all the variables
-3f+(4f+5)-11=0
We get rid of parentheses
-3f+4f+5-11=0
We add all the numbers together, and all the variables
f-6=0
We move all terms containing f to the left, all other terms to the right
f=6
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