(4 * 7) − 19 = 9
42 + (54 : 6)= 51
(27 : 9) : 3 = 1
8 * (40 : 5) = 64
(32 : 8) * 5 = 20
0 : (56 − 18) = 0
38 − (5 * 7) = 3
53 + (4 * 9) = 89
(42 : 7) : 1 = 6
16 : (48 : 6) = 2
(3 * 4) : 6 = 2
54 : (9 + 0) = 6
Вычисления:
(4 * 7) − 19 = 28 − 19 = 9
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}28\\ 19\end{array}}\\ \begin{array}{r}9\end{array}\end{array}$
42 + (54 : 6) = 42 + 9 = 51
(27 : 9) : 3 = 3 : 3 = 1
8 * (40 : 5) = 8 * 8 = 64
(32 : 8) * 5 = 4 * 5 = 20
0 : (56 − 18) = 0 : 38 = 0
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}56\\ 18\end{array}}\\ \begin{array}{r}38\end{array}\end{array}$
38 − (5 * 7) = 38 − 35 = 3
$\begin{array}{r}\begin{array}{r}-\end{array}\underline{\begin{array}{r}38\\ 35\end{array}}\\ \begin{array}{r}3\end{array}\end{array}$
53 + (4 * 9) = 53 + 36 = 89
$\begin{array}{r}\begin{array}{r}+\end{array}\underline{\begin{array}{r}53\\ 36\end{array}}\\ \begin{array}{r}89\end{array}\end{array}$
(42 : 7) : 1 = 6 : 1 = 6
16 : (48 : 6) = 16 : 8 = 2
(3 * 4) : 6 = 12 : 6 = 2
54 : (9 + 0) = 54 : 9 = 6