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(1/2)*x+1/3 = 5/2 // - 5/2
(1/2)*x+1/3-(5/2) = 0
(1/2)*x+1/3-5/2 = 0
1/2*x-13/6 = 0 // + 13/6
1/2*x = 13/6 // : 1/2
x = 13/6/1/2
x = 13/3
x = 13/3
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