1:10 × 2 - 9 + 13
2:(10 × 2) - 9 + 13
3:(10 × 2 - 9) + 13
4:((10 × 2) - 9) + 13
5:10 × 2 -(9 - 13)
6:(10 × 2) - (9 - 13)
7:10 × 2 + 13 - 9
8:(10 × 2) + 13 - 9
9:(10 × 2 + 13) - 9
10:((10 × 2) + 13) - 9
11:10 × 2 +(13 - 9)
12:(10 × 2) + (13 - 9)
13:(9 - 10 + 13) × 2
14:((9 - 10) + 13) × 2
15:(9 - (10 - 13)) × 2
16:(9 + 13 - 10) × 2
17:((9 + 13) - 10) × 2
18:(9 + (13 - 10)) × 2
19:2 × 10 - 9 + 13
20:(2 × 10) - 9 + 13
21:(2 × 10 - 9) + 13
22:((2 × 10) - 9) + 13
23:2 × 10 -(9 - 13)
24:(2 × 10) - (9 - 13)
25:2 × 10 + 13 - 9
26:(2 × 10) + 13 - 9
27:(2 × 10 + 13) - 9
28:((2 × 10) + 13) - 9
29:2 × 10 +(13 - 9)
30:(2 × 10) + (13 - 9)
31:2 × (9 - 10 + 13)
32:2 × ((9 - 10) + 13)
33:2 × (9 - (10 - 13))
34:2 × (9 + 13 - 10)
35:2 × ((9 + 13) - 10)
36:2 × (9 + (13 - 10))
37:2 × (13 - 10 + 9)
38:2 × ((13 - 10) + 9)
39:2 × (13 - (10 - 9))
40:2 × (13 + 9 - 10)
41:2 × ((13 + 9) - 10)
42:2 × (13 + (9 - 10))
43:(13 - 10 + 9) × 2
44:((13 - 10) + 9) × 2
45:(13 - (10 - 9)) × 2
46:13 + 10 × 2 - 9
47:(13 + 10 × 2) - 9
48:(13 + (10 × 2)) - 9
49:13 + (10 × 2) - 9
50:13 + (10 × 2 - 9)
51:13 + ((10 × 2) - 9)
52:(13 + 9 - 10) × 2
53:((13 + 9) - 10) × 2
54:(13 + (9 - 10)) × 2
55:13 - 9 + 10 × 2
56:(13 - 9) + 10 × 2
57:13 - 9 +(10 × 2)
58:(13 - 9) + (10 × 2)
59:13 - (9 - 10 × 2)
60:13 - (9 - (10 × 2))
61:13 - 9 + 2 × 10
62:(13 - 9) + 2 × 10
63:13 - 9 +(2 × 10)
64:(13 - 9) + (2 × 10)
65:13 - (9 - 2 × 10)
66:13 - (9 - (2 × 10))
67:13 + 2 × 10 - 9
68:(13 + 2 × 10) - 9
69:(13 + (2 × 10)) - 9
70:13 + (2 × 10) - 9
71:13 + (2 × 10 - 9)
72:13 + ((2 × 10) - 9)