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201.5=f+6.5(21)
We move all terms to the left:
201.5-(f+6.5(21))=0
We get rid of parentheses
-f-6.521+201.5=0
We add all the numbers together, and all the variables
-1f+194.979=0
We move all terms containing f to the left, all other terms to the right
-f=-194.979
f=-194.979/-1
f=194+0.97900000000001/1
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