f/2-21=-12

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Solution for f/2-21=-12 equation: 



f/2-21=-12

We move all terms to the left:

f/2-21-(-12)=0

We add all the numbers together, and all the variables

f/2-9=0

We multiply all the terms by the denominator


f-9*2=0

We add all the numbers together, and all the variables

f-18=0

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

f=18

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