35/21=45/y

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Solution for 35/21=45/y equation: 


D( y )

y = 0

y = 0

y = 0

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

35/21 = 45/y // - 45/y

35/21-(45/y) = 0

35/21-45*y^-1 = 0

-45*y^-1 = -5/3 // : -45

y^-1 = 1/27

-1 < 0

1/(y^1) = 1/27 // * y^1

1 = 1/27*y^1 // : 1/27

27 = y^1

y = 27

y = 27

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