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x/(1000+x)=0.3
We move all terms to the left:
x/(1000+x)-(0.3)=0
Domain of the equation: (1000+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!=-1000
x∈R
x/(x+1000)-(0.3)=0
We add all the numbers together, and all the variables
x/(x+1000)-0.3=0
We multiply all the terms by the denominator
x-(0.3)*(x+1000)=0
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