4/y+9=6/y-7

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Solution for 4/y+9=6/y-7 equation: 


D( y )

y = 0

y = 0

y = 0

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

4/y+9 = 6/y-7 // - 6/y-7

4/y-(6/y)+7+9 = 0

4/y-6*y^-1+7+9 = 0

-2*y^-1 = -16 // : -2

y^-1 = 8

-1 < 0

1/(y^1) = 8 // * y^1

1 = 8*y^1 // : 8

1/8 = y^1

y = 1/8

y = 1/8

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