\[\boxed{\mathbf{763\ (763)}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\[\textbf{а)}\ 7 - 7 = 7 + ( - 7) = 0\]
\[\textbf{б)}\ 2 - 8 = 2 + ( - 8) = - 6\]
\[\textbf{в)}\ 3 - 5 = 3 + ( - 5) = - 2\]
\[\textbf{г)}\ 1 - 10 = 1 + ( - 10) = - 9\]
\[\textbf{д)}\ 0 - 11 = 0 + ( - 11) = - 11\]
\[\textbf{е)}\ 10 - 12 = 10 + ( - 12) = - 2\]
\[\textbf{ж)}\ 0 - 3 = 0 + ( - 3) = - 3\]
\[\textbf{з)}\ 4 - 7 = 4 + ( - 7) = - 3\]