x=7y-x/y

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Solution for x=7y-x/y equation: 


x in (-oo:+oo)

x = 7*y-(x/y) // - 7*y-(x/y)

x-(7*y)+x/y = 0

x-7*y+x/y = 0

x*y^-1-7*y = 0 // + -7*y

x*y^-1 = -(-7*y) // : y^-1

x = (-(-7*y))/(y^-1)

x = 7*y^2

x = 7*y^2

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