(21/5)/(7/2)=(9/8)/(x)

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Solution for (21/5)/(7/2)=(9/8)/(x) equation: 


D( x )

x = 0

x = 0

x = 0

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

(21/5)/(7/2) = (9/8)/x // - (9/8)/x

(21/5)/(7/2)-((9/8)/x) = 0

(-9/8)*x^-1+(21/5)/(7/2) = 0

-9/8*x^-1 = -6/5 // : -9/8

x^-1 = 16/15

-1 < 0

1/(x^1) = 16/15 // * x^1

1 = 16/15*x^1 // : 16/15

15/16 = x^1

x = 15/16

x = 15/16

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