5
2 x (8 - 3)
9
2 x 7 - 3
4
7 + 2 x 4
3 x 6 / 2
2 x 3 - 1
(9 - 3) / 2 =
3
21
15
2 x (3 + 5)
3 x 14 / 2
8 / 2 x 3
11
10
12
(3 + 5) / 2
16