2f=4.2

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Solution for 2f=4.2 equation: 



2f=4.2

We move all terms to the left:

2f-(4.2)=0

We add all the numbers together, and all the variables

2f-4.2=0

We move all terms containing f to the left, all other terms to the right

2f=4.2

f=4.2/2

f=2+0.2/2

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