7/(8x+9)

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Solution for 7/(8x+9) equation: 


D( x )

8*x+9 = 0

8*x+9 = 0

8*x+9 = 0

8*x+9 = 0 // - 9

8*x = -9 // : 8

x = -9/8

x in (-oo:-9/8) U (-9/8:+oo)

7/(8*x+9) = 0

x belongs to the empty set

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