3 * 4 O 3 * 3 + 3;
3 * 5 − 3 O 3 * 4;
3 * 2 + 3 O 3 * 5;
3 * 3 − 3 O 3 * 4.
3 * 4 = 3 * 3 + 3
3 * 4 = 3 * 4
12 = 12
3 * 5 − 3 O 3 * 4
3 * 4 = 3 * 4
12 = 12
3 * 2 + 3 O 3 * 5
3 * 3 < 3 * 5
9 < 15
3 * 3 − 3 O 3 * 4
3 * 2 < 3 * 4
6 < 12