4/9=13/q

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Solution for 4/9=13/q equation: 


D( q )

q = 0

q = 0

q = 0

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

4/9 = 13/q // - 13/q

4/9-(13/q) = 0

4/9-13*q^-1 = 0

-13*q^-1 = -4/9 // : -13

q^-1 = 4/117

-1 < 0

1/(q^1) = 4/117 // * q^1

1 = 4/117*q^1 // : 4/117

117/4 = q^1

q = 117/4

q = 117/4

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