Вопрос:

Ответ:

\[MC = 27\ дм,\ \ BC = 8\ дм,\]

\[\ \ CN = 5\ дм.\]

\[MB - ?\ \ \ \ BN - ?\]

\[MB = MC - BC = 27 - 8 =\]

\[= 19\ дм.\]

\[BN = BC + CN = 8 + 5 =\]

\[= 13\ дм.\]

\[Ответ:19\ дм;\ \ 13\ дм.\]