1/7-4/14=1/y

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Solution for 1/7-4/14=1/y equation: 


D( y )

y = 0

y = 0

y = 0

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

1/7-(4/14) = 1/y // - 1/y

1/7-(1/y)-(4/14) = 0

1/7-y^-1-2/7 = 0

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

y^-1 = -1/7

-1 < 0

1/(y^1) = -1/7 // * y^1

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

-7 = y^1

y = -7

y = -7

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