2/7(4/m-18)=12

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Solution for 2/7(4/m-18)=12 equation: 


D( m )

m = 0

m = 0

m = 0

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

(2/7)*(4/m-18) = 12 // - 12

(2/7)*(4/m-18)-12 = 0

2/7*(4*m^-1-18)-12 = 0

2/7*(4*m^-1-18)-12 = 0

8/7*m^-1-120/7 = 0

8/7*m^-1-120/7 = 0

8/7*m^-1 = 120/7 // : 8/7

m^-1 = 15

-1 < 0

1/(m^1) = 15 // * m^1

1 = 15*m^1 // : 15

1/15 = m^1

m = 1/15

m = 1/15

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