Addition
2 + a = 8
6
9 - b = 5
4
85
7 - a = 4
3
22 + a = 56
34
45 - a = 34
11
35 + a = 100
65
72 - a = 18
54
35 + a = 78
43
68 - a = 43
25
87 + a = 109
22
58 - a = 23
35
123 + a = 456
333
345 - a = 212
133
546 + a = 1000
454
218 - a = 27
191
567 + a = 890
323
457 - a = 82
375
678 + a = 1092
414
892 - a = 575
317