6. 37 + 6 + 14 5 + 25 + 18 48 + 7 + 13

Решение:

1. \(37 + 6 + 14\)

* \(37 + 6 = 43\)
* \(43 + 14 = 57\)

2. \(5 + 25 + 18\)

* \(5 + 25 = 30\)
* \(30 + 18 = 48\)

3. \(48 + 7 + 13\)

* \(48 + 7 = 55\)
* \(55 + 13 = 68\)

Ответ:

* \(37 + 6 + 14 = 57\)
* \(5 + 25 + 18 = 48\)
* \(48 + 7 + 13 = 68\)