2/7=10/y

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Solution for 2/7=10/y equation: 


D( y )

y = 0

y = 0

y = 0

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

2/7 = 10/y // - 10/y

2/7-(10/y) = 0

2/7-10*y^-1 = 0

-10*y^-1 = -2/7 // : -10

y^-1 = 1/35

-1 < 0

1/(y^1) = 1/35 // * y^1

1 = 1/35*y^1 // : 1/35

35 = y^1

y = 35

y = 35

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