2907.3.10 + 5 403 780.5100- 20 471

Выполним вычисления по действиям:

1. 2907 × 3 = 8721


2. 8721 × 10 = 87210


3. 87210 + 5403 = 92613

2907 ⋅ 3 ⋅ 10 + 5 403 = 92613

1. 780 × 5 = 3900


2. 3900 × 100 = 390000


3. 390000 - 20471 = 369529

780 ⋅ 5 ⋅ 100 - 20 471 = 369529

Ответ: 2907 ⋅ 3 ⋅ 10 + 5 403 = 92613; 780 ⋅ 5 ⋅ 100 - 20 471 = 369529