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(1/2)*x+(5/6)*x+1/4 = 47/60 // - 47/60
(1/2)*x+(5/6)*x+1/4-(47/60) = 0
(1/2)*x+(5/6)*x+1/4-47/60 = 0
4/3*x-8/15 = 0 // + 8/15
4/3*x = 8/15 // : 4/3
x = 8/15/4/3
x = 2/5
x = 2/5
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