12/15=4/m

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Solution for 12/15=4/m equation: 


D( m )

m = 0

m = 0

m = 0

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

12/15 = 4/m // - 4/m

12/15-(4/m) = 0

12/15-4*m^-1 = 0

-4*m^-1 = -4/5 // : -4

m^-1 = 1/5

-1 < 0

1/(m^1) = 1/5 // * m^1

1 = 1/5*m^1 // : 1/5

5 = m^1

m = 5

m = 5

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