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20/x=30/x-2
We move all terms to the left:
20/x-(30/x-2)=0
Domain of the equation: x!=0
x∈R
Domain of the equation: x-2)!=0We get rid of parentheses
x∈R
20/x-30/x+2=0
We multiply all the terms by the denominator
2*x+20-30=0
We add all the numbers together, and all the variables
2x-10=0
We move all terms containing x to the left, all other terms to the right
2x=10
x=10/2
x=5
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