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0.09f+2(1.2+4f)=
We move all terms to the left:
0.09f+2(1.2+4f)-()=0
We add all the numbers together, and all the variables
0.09f+2(4f+1.2)-()=0
We add all the numbers together, and all the variables
0.09f+2(4f+1.2)=0
We multiply parentheses
0.09f+8f+2.4=0
We add all the numbers together, and all the variables
8.09f+2.4=0
We move all terms containing f to the left, all other terms to the right
8.09f=-2.4
f=-2.4/8.09
f=-1/3.3708333333333
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