55. Вычисли. 30 * 3 + 10 - (81 - 9) : 8 = 20 * 4 - 60 + (49 + 7) : 8 =

**Решение:**

1. `30 * 3 + 10 - (81 - 9) : 8 =`

* `30 * 3 = 90`
* `81 - 9 = 72`
* `72 : 8 = 9`
* `90 + 10 = 100`
* `100 - 9 = 91`

2. `20 * 4 - 60 + (49 + 7) : 8 =`

* `20 * 4 = 80`
* `49 + 7 = 56`
* `56 : 8 = 7`
* `80 - 60 = 20`
* `20 + 7 = 27`

**Ответ:**

* 30 * 3 + 10 - (81 - 9) : 8 = 91
* 20 * 4 - 60 + (49 + 7) : 8 = 27