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-12=2.2+f
We move all terms to the left:
-12-(2.2+f)=0
We add all the numbers together, and all the variables
-(f+2.2)-12=0
We get rid of parentheses
-f-2.2-12=0
We add all the numbers together, and all the variables
-1f-14.2=0
We move all terms containing f to the left, all other terms to the right
-f=14.2
f=14.2/-1
f=-14+0.2/1
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