14 − 9 + 3 = 5 + 3 = 8
8 + 7 + 4 = 15 + 4 = 19
19 − 16 + 7 = 3 + 7 = 10
10 + 2 − 6 = 12 − 6 = 6
6 + 8 − 7 = 14 − 7 = 7
7 + 4 + 5 = 11 + 5 = 16
16 − 8 − 5 = 8 − 5 = 3
3 + 15 − 4 = 18 − 4 = 14