(2/3)=(7/y)-4

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Solution for (2/3)=(7/y)-4 equation: 


D( y )

y = 0

y = 0

y = 0

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

2/3 = 7/y-4 // - 7/y-4

2/3-(7/y)+4 = 0

2/3-7*y^-1+4 = 0

-7*y^-1 = -14/3 // : -7

y^-1 = 2/3

-1 < 0

1/(y^1) = 2/3 // * y^1

1 = 2/3*y^1 // : 2/3

3/2 = y^1

y = 3/2

y = 3/2

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