2 + 30 = 30 + 2
30 + 2 = 30 + 2
8 + (7 + 5) = 8 + 7 + 5
8 + (7 + 5) = 8 + (7 + 5)
20 − 1 = 19
19 = 19
70 + 5 < 80
75 < 80
Условие:
2 + 30 O 30 + 2
8 + (7 + 5) O 8 + 7 + 5
20 − 1 O 19
70 + 5 O 80
2 + 30 = 30 + 2
30 + 2 = 30 + 2
8 + (7 + 5) = 8 + 7 + 5
8 + (7 + 5) = 8 + (7 + 5)
20 − 1 = 19
19 = 19
70 + 5 < 80
75 < 80