Tìm x biết :
a) x + 1 4/7 = 2 2/3 b) x - 3 1/2 = 2 1/4
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c) X x 2 3/4 = 3 3/4 d) 3 9/12 : x = 4 1/6
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e) x : 1 1/2 = 4 1/6 g) 5 1/2 - x = 3 1/4
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