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7.2f+5(f-8.1)=0.6+15.8
We move all terms to the left:
7.2f+5(f-8.1)-(0.6+15.8)=0
We add all the numbers together, and all the variables
7.2f+5(f-8.1)-(16.4)=0
We add all the numbers together, and all the variables
7.2f+5(f-8.1)-16.4=0
We multiply parentheses
7.2f+5f-40.5-16.4=0
We add all the numbers together, and all the variables
12.2f-56.9=0
We move all terms containing f to the left, all other terms to the right
12.2f=56.9
f=56.9/12.2
f=4+1.9756097561/2.9756097561
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