30-x=1/2x+12

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Solution for 30-x=1/2x+12 equation: 


x in (-oo:+oo)

30-x = (1/2)*x+12 // - (1/2)*x+12

30-x-((1/2)*x)-12 = 0

(-1/2)*x-x-12+30 = 0

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

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

x = -18/(-3/2)

x = 12

x = 12

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