20-2f=2

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Solution for 20-2f=2 equation:



20-2f=2
We move all terms to the left:
20-2f-(2)=0
We add all the numbers together, and all the variables
-2f+18=0
We move all terms containing f to the left, all other terms to the right
-2f=-18
f=-18/-2
f=+9

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