§ Задание 316
\[\boxed{\text{4.\ 316}}\]
\[x \cdot 7 + 5,3 = - 72,4\]
\[7x = - 72,4 - 5,3\]
\[7x = - 77,7\]
\[x = - 11,1.\]
\[Ответ:у\ Даши\ x = - 11,1.\]
\[\boxed{\text{4.\ 316}}\]
\[x \cdot 7 + 5,3 = - 72,4\]
\[7x = - 72,4 - 5,3\]
\[7x = - 77,7\]
\[x = - 11,1.\]
\[Ответ:у\ Даши\ x = - 11,1.\]