x/3=15/y

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Solution for x/3=15/y equation: 


x in (-oo:+oo)

x/3 = 15/y // - 15/y

x/3-(15/y) = 0

x/3-15*y^-1 = 0

1/3*x-15*y^-1 = 0 // + -15*y^-1

1/3*x = -(-15*y^-1) // : 1/3

x = (-(-15*y^-1))/1/3

x = 45*y^-1

x = 45*y^-1

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