9/12=15/m

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Solution for 9/12=15/m equation: 


D( m )

m = 0

m = 0

m = 0

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

9/12 = 15/m // - 15/m

9/12-(15/m) = 0

9/12-15*m^-1 = 0

-15*m^-1 = -3/4 // : -15

m^-1 = 1/20

-1 < 0

1/(m^1) = 1/20 // * m^1

1 = 1/20*m^1 // : 1/20

20 = m^1

m = 20

m = 20

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