ГДЗ по математике 6 класс Мерзляк Задание 308

\[\boxed{\mathbf{308\ (309).}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]

\[Было:\]

\[a - b.\]

\[1)\ \left( a + 14\frac{7}{83} \right) - b =\]

\[= a + 14\frac{7}{83} - b =\]

\[= a - b + 14\frac{7}{83}\text{.\ }\]

\[Увеличится\ на\ 14\frac{7}{83}.\]

\[2)\ a - \left( b + 4\frac{13}{57} \right) =\]

\[= a - b - 4\frac{13}{57}.\]

\[Уменьшится\ на\ \ 4\frac{13}{57}.\]

\[3)\ \left( a + \frac{4^{\backslash 2}}{21} \right) - \left( b + \frac{9^{\backslash 3}}{14} \right) =\]

\[= a + \frac{8}{42} - b - \frac{27}{42} =\]

\[= a - b - \left( \frac{27}{42} - \frac{8}{42} \right) =\]

\[= a - b - \frac{19}{42} \Longrightarrow уменьшится\]

\[\frac{19}{42}.\]

\[4)\ \left( a - 1\frac{1}{6} \right) - \left( b + \frac{2^{\backslash 2}}{3} \right) =\]

\[= a - 1\frac{1}{6} - b - \frac{4}{6} =\]

\[= a - b - \left( 1\frac{1}{6} + \frac{4}{6} \right) =\]

\[= a - b - 1\frac{5}{6} \Longrightarrow уменьшится\ \]

\[на\ 1\frac{5}{6}.\]

\[\boxed{\mathbf{308\ (}\mathbf{с}\mathbf{).}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]

\[Было:\]

\[a + b.\]

\[1)\ \left( a + 2\frac{3^{\backslash 3}}{8} \right) + \left( b - 1\frac{11^{\backslash 2}}{12} \right) =\]

\[= a + 2\frac{9}{24} + b - 1\frac{22}{24} =\]

\[= a + b + 1\frac{33}{24} - 1\frac{22}{24} =\]

\[= a + b + \frac{11}{24} \Longrightarrow увеличится\ на\ \]

\[\frac{11}{24}.\]

\[2)\ \left( a + 4\frac{6^{\backslash 2}}{11} \right) + \left( b - 5\frac{5}{22} \right) =\]

\[= a + 4\frac{12}{22} + b - 5\frac{5}{22} =\]

\[= a + b - \left( 4\frac{27}{22} - 4\frac{12}{22} \right) =\]

\[= a + b - \frac{15}{22} \Longrightarrow уменьшится\ \]

\[на\ \ \frac{15}{22}.\]