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-20f+19=-8f-19-14f
We move all terms to the left:
-20f+19-(-8f-19-14f)=0
We add all the numbers together, and all the variables
-20f-(-22f-19)+19=0
We get rid of parentheses
-20f+22f+19+19=0
We add all the numbers together, and all the variables
2f+38=0
We move all terms containing f to the left, all other terms to the right
2f=-38
f=-38/2
f=-19
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