\[\boxed{\mathbf{595\ (595)}.\ Еуроки\ - \ ДЗ\ без\ мороки}\]
\[Рисунок\ 154.\]
\[\angle ABC = 90{^\circ}.\]
\[\angle ABE = \angle DBE + 34{^\circ}.\]
\[\angle CBD = \angle DBE + 23{^\circ}.\]
\[\angle DBE = \angle ABC - 34{^\circ} - 23{^\circ} =\]
\[= 90 - 57 = 33{^\circ}.\]
\[Ответ:\ \ 33{^\circ}.\]