Предмет: Математика, автор: pocka160

Обчисли зручним способом: 2) 4,28*7,4+4,28*2,6=​

Ответы

Автор ответа: Madinowww
2

Можна помітити, що 4,28 є спільним множником в обох доданках. Тому можна записати вираз так:

4,28 × (7,4 + 2,6) = 4,28 × 10 = 42,8

Автор ответа: love67
1

Ответ:42,8

Пошаговое объяснение:

Применим распределительный закон

(a + b) * c = a * c + b * c

4,28*7,4+4,28*2,6=​4,28*(7,4+2,6)=4,28*10=42,8

Чтобы  умножить десятичную дробь на 10 перенесем запятую в дроби вправо на  ОДИН знак.

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