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vanchien71218
2 năm trước
1. |x|+x=2/3 2. Tìm giá trị nhỏ nhất của biểu thức A=|3/5-x|+1/9 3. Tìm giá trị lớn nhất của biểu thức B=2011/2012-|x-5/6|
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