Решебник по математике 5 класс Мерзляк ФГОС Задание 560

 

\[\boxed{\mathbf{560\ (560)}.\ Еуроки\ - \ ДЗ\ без\ мороки}\]

\(1)\ 7 \cdot (x - 19) = 133\)

\[x - 19 = 133\ :7\]

\[x = 19 + 19\]

\[x = 38\]

\(Ответ:38.\ \ \ \)

\(2)\ 9 \cdot (213 - 2x) = 927\)

\[213 - 2x = 927\ :9\]

\[2x = 213 - 103\]

\[x = 110\ :2\]

\[x = 55\]

\[Ответ:55.\]

\(3)\ 1344\ :(x + 26) = 32\)

\[x + 26 = 1344\ :32\]

\[x = 42 - 26\]

\[x = 16\]

\[Ответ:16.\]

\(4)\ 384\ :(51 - 5x) = 24\)

\[51 - 5x = 384\ :24\]

\[5x = 51 - 16\]

\[x = 35\ :5\]

\[x = 7\]

\[Ответ:7.\]

\[\boxed{\mathbf{560}\mathbf{\ (515)}.\ Еуроки\ - \ ДЗ\ без\ мороки}\]

\[1)\ 7 \cdot 9 + 12\ :(3 - 2) =\]

\[= 63 + 12\ :1 = 63 + 12 = 75\]

\[2)\ (7 \cdot 9 + 12)\ :3 - 2 =\]

\[= (63 + 12)\ :3 - 2 =\]

\[= 75\ :3 - 2 = 25 - 2 = 23\]