8/9=7/x

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Solution for 8/9=7/x equation: 


D( x )

x = 0

x = 0

x = 0

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

8/9 = 7/x // - 7/x

8/9-(7/x) = 0

8/9-7*x^-1 = 0

-7*x^-1 = -8/9 // : -7

x^-1 = 8/63

-1 < 0

1/(x^1) = 8/63 // * x^1

1 = 8/63*x^1 // : 8/63

63/8 = x^1

x = 63/8

x = 63/8

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