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200=1000-150f
We move all terms to the left:
200-(1000-150f)=0
We add all the numbers together, and all the variables
-(-150f+1000)+200=0
We get rid of parentheses
150f-1000+200=0
We add all the numbers together, and all the variables
150f-800=0
We move all terms containing f to the left, all other terms to the right
150f=800
f=800/150
f=5+1/3
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