Thực hiện phép tính: 7/12 - 2/7 - 1/12

7/12 - 2/7 - 1/12

= 7/12 - 1/12 - 2/7

= 1/2 - 2/7

= 3/14

\(\frac{7}{12}-\frac{2}{7}-\frac{1}{12}\)

\(=\frac{7}{12}-\frac{1}{12}-\frac{2}{7}\)

\(=\frac{6}{12}-\frac{2}{7}\)

\(=\frac{1}{2}-\frac{2}{7}=\frac{3}{14}\)

7/12 - 2/7 - 1/12 = 3/14