\[\boxed{\mathbf{896\ (896)}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\[\textbf{а)}\ |5| + | - 5| = 5 + 5 = 10\]
\[\textbf{б)}\ | - 25| + | - 20| = 25 + 20 = 45\]
\[\textbf{в)}\ \left| ( - 29) + ( - 1) \right| = | - 30| = 30\]
\[\textbf{г)}\ \left| ( - 3) + 15 \right| = |12| = 12\ \]