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(240-x)/x=240/(x+40)
We move all terms to the left:
(240-x)/x-(240/(x+40))=0
Domain of the equation: x!=0
x∈R
Domain of the equation: (x+40))!=0We add all the numbers together, and all the variables
x∈R
(-1x+240)/x-(240/(x+40))=0
We calculate fractions
((-1x+240)*(x+40)))/41x^2+(-(240*x)/41x^2=0
We add all the numbers together, and all the variables
((-1x+240)*(x+40)))/41x^2+(-(+240x)/41x^2=0
We calculate fractions
(((-1x+240)*(x+40)))*41x^2)/(41x^2+(*41x^2)+(-(+240x)*41x^2)/(41x^2+(*41x^2)=0
We calculate terms in parentheses: +(-(+240x)*41x^2)/(41x^2+(*41x^2), so:We get rid of parentheses
-(+240x)*41x^2)/(41x^2+(*41x^2
We multiply all the terms by the denominator
-(+240x)*41x^2)+((*41x^2)*(41x^2
Back to the equation:
+(-(+240x)*41x^2)+((*41x^2)*(41x^2)
(((-1x+240)*(x+40)))*41x^2)/(41x^2+*41x^2+(-(+240x)*41x^2)+((*41x^2)*41x^2=0
We multiply all the terms by the denominator
(((-1x+240)*(x+40)))*41x^2)+(*41x^2)*(41x^2+((-(+240x)*41x^2))*(41x^2+(((*41x^2)*41x^2)*(41x^2=0
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