3/10=8/q

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Solution for 3/10=8/q equation: 


D( q )

q = 0

q = 0

q = 0

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

3/10 = 8/q // - 8/q

3/10-(8/q) = 0

3/10-8*q^-1 = 0

-8*q^-1 = -3/10 // : -8

q^-1 = 3/80

-1 < 0

1/(q^1) = 3/80 // * q^1

1 = 3/80*q^1 // : 3/80

80/3 = q^1

q = 80/3

q = 80/3

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