2. Tìm xa) x-1/5=2/11b) x -5/6=16/42 + -8/56 c) x -7/8=13/12d)x - -6/15=-4/27

2. Tìm x

a) x-1/5=2/11

b) x -5/6=16/42 + -8/56

c) x -7/8=13/12

d)x - -6/15=-4/27

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