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1.2+5f=11.45
We move all terms to the left:
1.2+5f-(11.45)=0
We add all the numbers together, and all the variables
5f-10.25=0
We move all terms containing f to the left, all other terms to the right
5f=10.25
f=10.25/5
f=2+0.25/5
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