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20+14f-6=-20+12f
We move all terms to the left:
20+14f-6-(-20+12f)=0
We add all the numbers together, and all the variables
14f-(12f-20)+20-6=0
We add all the numbers together, and all the variables
14f-(12f-20)+14=0
We get rid of parentheses
14f-12f+20+14=0
We add all the numbers together, and all the variables
2f+34=0
We move all terms containing f to the left, all other terms to the right
2f=-34
f=-34/2
f=-17
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