4/7=2x/9y

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Solution for 4/7=2x/9y equation: 


x in (-oo:+oo)

4/7 = ((2*x)/9)*y // - ((2*x)/9)*y

4/7-(((2*x)/9)*y) = 0

(-2/9)*x*y+4/7 = 0

4/7-2/9*x*y = 0 // - 4/7

-2/9*x*y = -4/7 // : -2/9*y

x = -4/7/(-2/9*y)

x = 18/7*y^-1

x = 18/7*y^-1

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