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(3*x+9)/6+(4*x)/2 = 2 // - 2
(3*x+9)/6+(4*x)/2-2 = 0
(3*x+9)/6+2*x-2 = 0
(3*x+9)/6+(2*6*x)/6+(-2*6)/6 = 0
3*x+2*6*x-2*6+9 = 0
15*x-12+9 = 0
15*x-3 = 0
(15*x-3)/6 = 0
(15*x-3)/6 = 0 // * 6
15*x-3 = 0
15*x-3 = 0 // + 3
15*x = 3 // : 15
x = 3/15
x = 1/5
x = 1/5
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