x/3+y/7=9

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Solution for x/3+y/7=9 equation: 


x in (-oo:+oo)

x/3+y/7 = 9 // - 9

x/3+y/7-9 = 0

1/3*x+1/7*y-9 = 0 // - 1/7*y-9

1/3*x = -(1/7*y-9) // : 1/3

x = (-(1/7*y-9))/1/3

x = 3*(9-(1/7*y))

x = 3*(9-(1/7*y))

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