3+f=21f=

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Solution for 3+f=21f= equation:



3+f=21f=
We move all terms to the left:
3+f-(21f)=0
We add all the numbers together, and all the variables
-20f+3=0
We move all terms containing f to the left, all other terms to the right
-20f=-3
f=-3/-20
f=3/20

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