-20/y=-60/15

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Solution for -20/y=-60/15 equation: 


D( y )

y = 0

y = 0

y = 0

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

-20/y = -60/15 // + -60/15

-20/y-(-60/15) = 0

4-20/y = 0

-20*y^-1 = -4 // : -20

y^-1 = 1/5

-1 < 0

1/(y^1) = 1/5 // * y^1

1 = 1/5*y^1 // : 1/5

5 = y^1

y = 5

y = 5

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