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1800-1000/x=20
We move all terms to the left:
1800-1000/x-(20)=0
Domain of the equation: x!=0We add all the numbers together, and all the variables
x∈R
-1000/x+1780=0
We multiply all the terms by the denominator
1780*x-1000=0
We add all the numbers together, and all the variables
1780x-1000=0
We move all terms containing x to the left, all other terms to the right
1780x=1000
x=1000/1780
x=50/89
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