Условие:

Найди значения выражений.
18 : 6 + 513 − 5 * (91 − 84)
64 : 8 + 9 : 9 − 63 : 7
(6 + 2) * (701 − 698) : (3 * 4 : 2)
4 * 8 − 8 * (41 − 39)

18 : 6 + 513 − 5 * (91 − 84) = 481
64 : 8 + 9 : 9 − 63 : 7 = 0
(6 + 2) * (701 − 698) : (3 * 4 : 2) = 4
4 * 8 − 8 * (41 − 39) = 16
Вычисления:
18 : 6 + 513 − 5 * (91 − 84) = 3 + 513 − 35 = 516 − 35 = 481
1) 18 : 6 = 3
2) 5 * (91 − 84) = 5 * 7 = 35
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}91\\ 84\end{array}}\\ \begin{array}{r}7\end{array}\end{array}$
$\begin{array}{r}\begin{array}{r}+\end{array}\underline{\begin{array}{r}3\\ 513\end{array}}\\ \begin{array}{r}516\end{array}\end{array}$
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}516\\ 35\end{array}}\\ \begin{array}{r}481\end{array}\end{array}$
64 : 8 + 9 : 9 − 63 : 7 = 8 + 1 − 9 = 9 − 9 = 0
1) 64 : 8 = 8
2) 9 : 9 = 1
3) 63 : 7 = 9
(6 + 2) * (701 – 698) : (3 * 4 : 2) = 8 * 3 : 6 = 24 : 6 = 4
1) (6 + 2) = 8
2) (701 − 698) = 3
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}701\\ 698\end{array}}\\ \begin{array}{r}3\end{array}\end{array}$
3) (3 * 4 : 2) = 12 : 2 = 6
4 * 8 − 8 * (41 − 39) = 32 − 8 * 2 = 32 − 16 = 16
1) 4 * 8 = 32
2) (41 − 39) = 2
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}41\\ 39\end{array}}\\ \begin{array}{r}2\end{array}\end{array}$
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}32\\ 16\end{array}}\\ \begin{array}{r}16\end{array}\end{array}$