40 − 7 − 20 = 33 − 20 = 13
50 + 14 − 30 = 64 − 30 = 34
23 + 40 + 7 = 63 + 7 = 70
18 + 50 − 8 = 68 − 8 = 60
Условие:
40 O 7 O 20 = 13
50 O 14 O 30 = 34
23 O 40 O 7 = 70
18 O 50 O 8 = 60
Условие:
40 O 7 O 20 = 13
50 O 14 O 30 = 34
23 O 40 O 7 = 70
18 O 50 O 8 = 60
40 − 7 − 20 = 33 − 20 = 13
50 + 14 − 30 = 64 − 30 = 34
23 + 40 + 7 = 63 + 7 = 70
18 + 50 − 8 = 68 − 8 = 60