\[\boxed{\mathbf{897\ (897)}.\ Еуроки\ - \ ДЗ\ без\ мороки}\]
\[39,8 - 14,48 =\]
\[= 25,32 + 48,803 =\]
\[= 74,123 - 33,923 = 40,2\]
\[a = 25,32;\ \ x = 48,803;\ \ \]
\[y = 33,923.\]
\[\boxed{\mathbf{897}\mathbf{\ (761)}.\ Еуроки\ - \ ДЗ\ без\ мороки}\]