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(6+x)/(15+x)=0.6
We move all terms to the left:
(6+x)/(15+x)-(0.6)=0
Domain of the equation: (15+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!=-15
x∈R
(x+6)/(x+15)-(0.6)=0
We add all the numbers together, and all the variables
(x+6)/(x+15)-0.6=0
We multiply all the terms by the denominator
(x+6)-(0.6)*(x+15)=0
We get rid of parentheses
x-(0.6)*(x+15)+6=0
We move all terms containing x to the left, all other terms to the right
x-(0.6)*(x+15)=-6
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