3/5=20/x-15

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Solution for 3/5=20/x-15 equation: 


D( x )

x = 0

x = 0

x = 0

x in (-oo:0) U (0:+oo)

3/5 = 20/x-15 // - 20/x-15

3/5-(20/x)+15 = 0

3/5-20*x^-1+15 = 0

-20*x^-1 = -78/5 // : -20

x^-1 = 39/50

-1 < 0

1/(x^1) = 39/50 // * x^1

1 = 39/50*x^1 // : 39/50

50/39 = x^1

x = 50/39

x = 50/39

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