\[\boxed{\mathbf{748\ (748)}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\[\textbf{а)}\ 8 + ( - 3) = 5\]
\[\textbf{б)}\ 15 + ( - 15) = 0\]
\[\textbf{в)}\ ( - 4) + ( - 2) = - 6\]
\[\textbf{г)}\ ( - 1) + 0 = - 1\]
\[\textbf{д)}\ ( - 10) + 5 = - 5\]
\[\textbf{е)}\ 7 + ( - 9) = - 2\]
\[\textbf{ж)}\ 3 + ( - 6) = - 3\]
\[\textbf{з)}\ ( - 2) + ( - 10) = - 12\]
\[\textbf{и)}\ 0 + ( - 6) = - 6\]