9/Y+7/Y=4

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Solution for 9/Y+7/Y=4 equation: 


D( Y )

Y = 0

Y = 0

Y = 0

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

9/Y+7/Y = 4 // - 4

9/Y+7/Y-4 = 0

16*Y^-1 = 4 // : 16

Y^-1 = 1/4

-1 < 0

1/(Y^1) = 1/4 // * Y^1

1 = 1/4*Y^1 // : 1/4

4 = Y^1

Y = 4

Y = 4

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