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(1/2)*x+1/4 = 121/3 // - 121/3
(1/2)*x+1/4-(121/3) = 0
(1/2)*x+1/4-121/3 = 0
1/2*x-481/12 = 0 // + 481/12
1/2*x = 481/12 // : 1/2
x = 481/12/1/2
x = 481/6
x = 481/6
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