ГДЗ по математике 6 класс Дорофеев Задание 771

\[\boxed{\mathbf{771\ (771)}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]

\[\textbf{а)} - 5 - 3 + 6 - 8 + 4 = ( - 5 - 3 - 8) + (6 + 4) = - 16 + 10 = - 6\]

\[\textbf{б)}\ 1 - 2 + 5 - 7 - 11 = (1 + 5) + ( - 2 - 7 - 11) = 6 - 20 = - 14\]

\[\textbf{в)}\ 7 - 4 - 9 + 8 - 6 = (7 + 8) + ( - 4 - 9 - 6) = 15 - 19 = - 4\]

\[\textbf{г)}\ 4 - 8 + 3 - 9 + 6 = (4 + 3 + 6) + ( - 8 - 9) = 13 - 17 = - 4\]

\[\textbf{д)}\ 17 - 19 - 50 + 21 + 37 = (17 + 21 + 37) + ( - 19 - 50) = 75 - 69 = 6\]

\[\textbf{е)} - 31 + 42 + 14 - 12 - 60 = (42 + 14) + ( - 31 - 12 - 60) =\]

\[= 56 - 103 = - 47\]