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x/(x+100)=5
We move all terms to the left:
x/(x+100)-(5)=0
Domain of the equation: (x+100)!=0We multiply all the terms by the denominator
We move all terms containing x to the left, all other terms to the right
x!=-100
x∈R
x-5*(x+100)=0
We multiply parentheses
x-5x-500=0
We add all the numbers together, and all the variables
-4x-500=0
We move all terms containing x to the left, all other terms to the right
-4x=500
x=500/-4
x=-125
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