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7(f-1)=45.
We move all terms to the left:
7(f-1)-(45.)=0
We add all the numbers together, and all the variables
7(f-1)-45=0
We multiply parentheses
7f-7-45=0
We add all the numbers together, and all the variables
7f-52=0
We move all terms containing f to the left, all other terms to the right
7f=52
f=52/7
f=7+3/7
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