x+(1/2)*x=18 - solution

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Solution for x+(1/2)*x=18 equation:

x in (-oo:+oo)

x+(1/2)*x = 18 // - 18

x+(1/2)*x-18 = 0

3/2*x-18 = 0 // + 18

3/2*x = 18 // : 3/2

x = 18/3/2

x = 12

x = 12

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