Условие:

Найди среди чисел: 7, 26, 34, 48, 64, 68 − ответы к каждому из примеров.
(9 * 6) − 28
74 − (48 : 8)
(54 : 9) + 58
(45 − 39) * 8
(19 + 23) : 6
82 − (6 * 8)

(9 * 6) − 28 = 26
74 − (48 : 8) = 68
(54 : 9) + 58 = 64
(45 − 39) * 8 = 48
(19 + 23) : 6 = 7
82 − (6 * 8) = 34
Вычисления:
(9 * 6) − 28 = 54 − 28 = 26
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}54\\ 28\end{array}}\\ \begin{array}{r}26\end{array}\end{array}$
74 − (48 : 8) = 74 − 6 = 68
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}74\\ 6\end{array}}\\ \begin{array}{r}68\end{array}\end{array}$
(54 : 9) + 58 = 6 + 58 = 64
$\begin{array}{r}\begin{array}{r}+\end{array}\underline{\begin{array}{r}6\\ 58\end{array}}\\ \begin{array}{r}64\end{array}\end{array}$
(45 − 39) * 8 = 6 * 8 = 48
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}45\\ 39\end{array}}\\ \begin{array}{r}6\end{array}\end{array}$
(19 + 23) : 6 = 42 : 6 = 7
$\begin{array}{r}\begin{array}{r}+\end{array}\underline{\begin{array}{r}19\\ 23\end{array}}\\ \begin{array}{r}42\end{array}\end{array}$
82 − (6 * 8) = 82 − 48 = 34
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}82\\ 48\end{array}}\\ \begin{array}{r}34\end{array}\end{array}$