f/3-21=28

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Solution for f/3-21=28 equation: 



f/3-21=28

We move all terms to the left:

f/3-21-(28)=0

We add all the numbers together, and all the variables

f/3-49=0

We multiply all the terms by the denominator


f-49*3=0

We add all the numbers together, and all the variables

f-147=0

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

f=147

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