Выполним вычисления столбиком:
1) 70 - 7 = 63
70 - 7 --- 63
2) 40 - 18 = 22
40 - 18 --- 22
3) 90 - 6 = 84
90 - 6 --- 84
4) 60 - 2 = 58
60 - 2 --- 58
5) 50 - 24 = 26
50 - 24 --- 26
6) 70 - 42 = 28
70 - 42 --- 28
Ответ: 63, 22, 84, 58, 26, 28