Question

Сократить дробь 21×5/40×7​

Answer 1

Объяснение:

21×5/40×7=3*7*5/5*8*7=3/8

Answer 2

To simplify the fraction (21×5) / (40×7), follow these steps:

1. Calculate the numerator: 21 × 5 = 105
2. Calculate the denominator: 40 × 7 = 280

Now, the fraction is 105/280. To simplify it further, find the greatest common divisor (GCD) of the numerator and denominator and divide both by it.

The GCD of 105 and 280 is 35 (since 105 = 3 * 5 * 7 and 280 = 2 * 2 * 2 * 5 * 7).

Divide both the numerator and the denominator by 35:

105 ÷ 35 = 3 280 ÷ 35 = 8

The simplified fraction is 3/8.