2/1=5/q

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Solution for 2/1=5/q equation: 


D( q )

q = 0

q = 0

q = 0

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

2/1 = 5/q // - 5/q

2/1-(5/q) = 0

2-5*q^-1 = 0

-5*q^-1 = -2 // : -5

q^-1 = 2/5

-1 < 0

1/(q^1) = 2/5 // * q^1

1 = 2/5*q^1 // : 2/5

5/2 = q^1

q = 5/2

q = 5/2

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