4/y-1=7

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Solution for 4/y-1=7 equation: 


D( y )

y = 0

y = 0

y = 0

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

4/y-1 = 7 // - 7

4/y-7-1 = 0

4*y^-1 = 8 // : 4

y^-1 = 2

-1 < 0

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

1 = 2*y^1 // : 2

1/2 = y^1

y = 1/2

y = 1/2

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