\[\boxed{\ \mathbf{904\ (904)}.\ Еуроки\ - \ ДЗ\ без\ мороки}\]
\[1)\ (4,\ 12 + 0,116) - 1,12 =\]
\[= (4,12 - 1,12) + 0,116 =\]
\[= 3 + 0,116 = 3,116\]
\[2)\ (5,93 + 67,5) - 27,5 =\]
\[= 5,93 + (67,5 - 27,5) =\]
\[= 5,93 + 40 = 45,93\]
\[3)\ 0,844 - (0,244 + 0,018) =\]
\[= (0,844 - 0,244) - 0,018 =\]
\[= 0,6 - 0,018 = 0,582\]
\[4)\ 7,29 - (3,961 + 2,29) =\]
\[= (7,29 - 2,29) - 3,961 =\]
\[= 5 - 3,961 = 1,039\]
\[\boxed{\mathbf{904}.\ }\]
\[1)\ \frac{b}{7} = 12\]
\[b = 12 \cdot 7\]
\[b = 84\]
\[Ответ:84.\]
\[2)\frac{169}{m} = 13\]
\[m = \frac{169}{13}\]
\[m = 13\]
\[Ответ:13.\]
\[3)\frac{126}{8 - y} = 21\]
\[8 - y = \frac{126}{21}\]
\[8 - y = 6\]
\[y = 8 - 6\]
\[y = 2\]
\[Ответ:2.\]
\[4)\ \frac{x + 6}{6} = 6\]
\[x + 6 = 6 \cdot 6\]
\[x + 6 = 36\]
\[x = 36 - 6\]
\[x = 30.\]
\[Ответ:\ 30.\]