21/y-8=3/1

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Solution for 21/y-8=3/1 equation: 


D( y )

y = 0

y = 0

y = 0

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

21/y-8 = 3/1 // - 3/1

21/y-(3/1)-8 = 0

21/y-8-3 = 0

21*y^-1 = 11 // : 21

y^-1 = 11/21

-1 < 0

1/(y^1) = 11/21 // * y^1

1 = 11/21*y^1 // : 11/21

21/11 = y^1

y = 21/11

y = 21/11

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