ГДЗ по математике 5 класс Мерзляк ФГОС Задание 904

 

\[\boxed{\ \mathbf{904\ (904)}.\ Еуроки\ - \ ДЗ\ без\ мороки}\]

\[1)\ (4,\ 12 + 0,116) - 1,12 =\]

\[= (4,12 - 1,12) + 0,116 =\]

\[= 3 + 0,116 = 3,116\]

\[2)\ (5,93 + 67,5) - 27,5 =\]

\[= 5,93 + (67,5 - 27,5) =\]

\[= 5,93 + 40 = 45,93\]

\[3)\ 0,844 - (0,244 + 0,018) =\]

\[= (0,844 - 0,244) - 0,018 =\]

\[= 0,6 - 0,018 = 0,582\]

\[4)\ 7,29 - (3,961 + 2,29) =\]

\[= (7,29 - 2,29) - 3,961 =\]

\[= 5 - 3,961 = 1,039\]

\[\boxed{\mathbf{904}.\ }\]

\[1)\ \frac{b}{7} = 12\]

\[b = 12 \cdot 7\]

\[b = 84\]

\[Ответ:84.\]

\[2)\frac{169}{m} = 13\]

\[m = \frac{169}{13}\]

\[m = 13\]

\[Ответ:13.\]

\[3)\frac{126}{8 - y} = 21\]

\[8 - y = \frac{126}{21}\]

\[8 - y = 6\]

\[y = 8 - 6\]

\[y = 2\]

\[Ответ:2.\]

\[4)\ \frac{x + 6}{6} = 6\]

\[x + 6 = 6 \cdot 6\]

\[x + 6 = 36\]

\[x = 36 - 6\]

\[x = 30.\]

\[Ответ:\ 30.\]