Решебник по математике 6 класс Мерзляк ФГОС Задание 276

\[\boxed{\mathbf{276\ (275)}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]

\[1)\ 4\frac{5^{\backslash 2}}{9} + 7\frac{1^{\backslash 3}}{6} = 4\frac{10}{18} + 7\frac{3}{18} =\]

\[= 11\frac{13}{18}\]

\[2)\ 6\frac{11^{\backslash 3}}{12} + 8\frac{13^{\backslash 2}}{18} =\]

\[= 6\frac{33}{36} + 8\frac{26}{36} = 14\frac{59}{36} = 15\frac{23}{36}\]

\[3)\ 2\frac{3^{\backslash 3}}{16} + 1\frac{7^{\backslash 2}}{24} + 3\frac{1^{\backslash 4}}{12} =\]

\[= 2\frac{9}{48} + 1\frac{14}{48} + 3\frac{4}{48} = 6\frac{27}{48} =\]

\[= 6\frac{9}{16}\]

\[\boxed{\mathbf{276\ (}\mathbf{с}\mathbf{)}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]

\[1)\ 5\frac{7^{\backslash 5}}{8} + 6\frac{3^{\backslash 4}}{10} = 5\frac{35}{40} + 6\frac{12}{40} =\]

\[= 11\frac{47}{40} = 12\frac{7}{40}\]

\[2)\ 6\frac{3^{\backslash 9}}{8} + 2\frac{5^{\backslash 8}}{9} = 6\frac{27}{72} + 2\frac{40}{72} =\]

\[= 8\frac{67}{72}\]

\[3)\ 1\frac{8^{\backslash 2}}{21} + 4\frac{3^{\backslash 3}}{14} + 2\frac{2^{\backslash 6}}{7} =\]

\[= 1\frac{16}{42} + 4\frac{9}{42} + 2\frac{12}{42} = 7\frac{37}{42}\]

\[\boxed{\mathbf{276}\mathbf{.}}\]

\[3\ дуги:AB;BC;AC.\]