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6.40(f+4.80)=128.15
We move all terms to the left:
6.40(f+4.80)-(128.15)=0
We add all the numbers together, and all the variables
6.40(f+4.8)-(128.15)=0
We add all the numbers together, and all the variables
6.40(f+4.8)-128.15=0
We multiply parentheses
6.4f+30.72-128.15=0
We add all the numbers together, and all the variables
6.4f-97.43=0
We move all terms containing f to the left, all other terms to the right
6.4f=97.43
f=97.43/6.4
f=15+1/4.4755244755245
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