Вычислите: 1:1 7/8+3/7*3 1/2-2/3:5/6.

\[1\ :1\frac{7}{8} + \frac{3}{7}\ \bullet 3\frac{1}{2} - \frac{2}{3}\ :\ \frac{5}{6} =\]

\[= \frac{1 \bullet 8}{1 \bullet 15} + \ \frac{3 \bullet 7}{7 \bullet 2} - \frac{2 \bullet 3 \bullet 2}{3 \bullet 5} =\]

\[= \frac{8^{\backslash 2}}{15} + \frac{3^{\backslash 15}}{2} - \frac{4^{\backslash 6}}{5} =\]

\[= \frac{16 + 45 - 24}{30} = \frac{37}{30} = 1,2(3)\]