3/4=42/y

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Solution for 3/4=42/y equation: 


D( y )

y = 0

y = 0

y = 0

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

3/4 = 42/y // - 42/y

3/4-(42/y) = 0

3/4-42*y^-1 = 0

-42*y^-1 = -3/4 // : -42

y^-1 = 1/56

-1 < 0

1/(y^1) = 1/56 // * y^1

1 = 1/56*y^1 // : 1/56

56 = y^1

y = 56

y = 56

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