100-55:11-85:17-45:15 = 35:7+48:8-54:18-60:12 = 24:8+30:2+51:17+66:11 = 90+36:6-42:14+69:3=

Первый пример.

45 / 15 = 3;

85 / 17 = 5;

55 / 11 = 5;

100 - 5 = 95;

95 - 5 = 90;

90 - 3 = 87.

Второй пример.

60 / 12 = 5;

54 / 18 = 3;

48 / 8 = 6;

35 / 7 = 5;

5 + 6 = 11;

11 - 3 = 8;

8 - 5 = 3.

Третий пример.

66 / 11 = 6;

51 / 17 = 3;

30 / 2 = 15;

24 / 8 = 3;

3 + 15 = 18;

18 + 3 = 21;

21 + 6 = 27.

Четвертый пример.

69 / 3 = 23;

42 / 14 = 3;

36 / 6 = 6;

90 + 6 = 96;

96 - 3 = 93;

93 + 23 = 116.