Решебник по математике 6 класс Мерзляк ФГОС Задание 1015

\[\boxed{\mathbf{1015\ (}\mathbf{н}\mathbf{)}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]

\[1)\ a = - 4;\ \ b = 12;\ \ c = - 6;\ \]

\[\ d = 8:\]

\[- a + b + c - d = - ( - 4) + 12 +\]

\[+ ( - 6) - 8 = 4 + 12 - 6 - 8 =\]

\[= 16 - 14 = 2\]

\[2)\ a = 3\frac{1}{3};\ \ b = 2\frac{1}{2};\ \ \]

\[\ c = - 1\frac{5}{6};\ \ \ d = 5:\]

\[- a + b + c - d = - 3\frac{1}{3} + 2\frac{1}{2} +\]

\[+ \left( - 1\frac{5}{6} \right) - 5 = - 3\frac{2}{6} +\]

\[+ 2\frac{3}{6} - 1\frac{5}{6} - 5 =\]

\[= - 9\frac{7}{6} + 2\frac{3}{6} = - 7\frac{4}{6} = - 7\frac{2}{3}\]