54=3x+6x+9

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Solution for 54=3x+6x+9 equation: 


x in (-oo:+oo)

54 = 3*x+6*x+9 // - 3*x+6*x+9

54-(3*x)-(6*x)-9 = 0

54-3*x-6*x-9 = 0

45-9*x = 0 // - 45

-9*x = -45 // : -9

x = -45/(-9)

x = 5

x = 5

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