我们需要找到10至80之间所有可以组成相等的等式的数字，并输出这些等式。
首先，我们可以从10开始，逐个尝试每个数字作为等式的左半部分。
10 + 70 = 80
11 + 69 = 80
12 + 68 = 80
13 + 67 = 80
14 + 66 = 80
15 + 65 = 80
16 + 64 = 80
17 + 63 = 80
18 + 62 = 80
19 + 61 = 80
20 + 60 = 80
21 + 59 = 80
22 + 58 = 80
23 + 57 = 80
24 + 56 = 80
25 + 55 = 80
26 + 54 = 80
27 + 53 = 80
28 + 52 = 80
29 + 51 = 80
30 + 50 = 80
31 + 49 = 80
32 + 48 = 80
33 + 47 = 80
34 + 46 = 80
35 + 45 = 80
36 + 44 = 80
37 + 43 = 80
38 + 42 = 80
39 + 41 = 80
所以，10至80之间可以组成相等的等式的数字有：
10 + 70 = 80
11 + 69 = 80
12 + 68 = 80
13 + 67 = 80
14 + 66 = 80
15 + 65 = 80
16 + 64 = 80
17 + 63 = 80
18 + 62 = 80
19 + 61 = 80
20 + 60 = 80
21 + 59 = 80
22 + 58 = 80
23 + 57 = 80
24 + 56 = 80
25 + 55 = 80
26 + 54 = 80
27 + 53 = 80
28 + 52 = 80
29 + 51 = 80
30 + 50 = 80
31 + 49 = 80
32 + 48 = 80
33 + 47 = 80
34 + 46 = 80
35 + 45 = 80
36 + 44 = 80
37 + 43 = 80
38 + 42 = 80
39 + 41 = 80
40 + 40 = 80