- $$27 + 13 - 36 = 40 - 36 = 4$$
- $$48 + 22 - 18 = 70 - 18 = 52$$
- $$64 + 16 - 25 = 80 - 25 = 55$$
- $$56 - (12 + 36) = 56 - 48 = 8$$
- $$(70 - 35) + (60 - 48) = 35 + 12 = 47$$
- $$90 - (64 - 19) + 27 = 90 - 45 + 27 = 45 + 27 = 72$$
Ответ: 4; 52; 55; 8; 47; 72.