2.8=f-2.1

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Solution for 2.8=f-2.1 equation: 



2.8=f-2.1

We move all terms to the left:

2.8-(f-2.1)=0

We get rid of parentheses

-f+2.1+2.8=0

We add all the numbers together, and all the variables

-1f+4.9=0

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

-f=-4.9

f=-4.9/-1

f=4+0.9/1

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