-7/y+7/5=4

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Solution for -7/y+7/5=4 equation: 


D( y )

y = 0

y = 0

y = 0

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

7/5-7/y = 4 // - 4

7/5-7/y-4 = 0

-7*y^-1 = 13/5 // : -7

y^-1 = -13/35

-1 < 0

1/(y^1) = -13/35 // * y^1

1 = -13/35*y^1 // : -13/35

-35/13 = y^1

y = -35/13

y = -35/13

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