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x/(50+x)=0.4
We move all terms to the left:
x/(50+x)-(0.4)=0
Domain of the equation: (50+x)!=0We add all the numbers together, and all the variables
We move all terms containing x to the left, all other terms to the right
x!=-50
x∈R
x/(x+50)-(0.4)=0
We add all the numbers together, and all the variables
x/(x+50)-0.4=0
We multiply all the terms by the denominator
x-(0.4)*(x+50)=0
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