Question

Выполните действия (2/7+5/21):1 4/7

Answer 1

(6/21+5/21):14/7=11/21*7/14=11/42

Answer 2

Calculating (2/7 + 5/21) ÷ (1 + 4/7)

To calculate the expression (2/7 + 5/21) ÷ (1 + 4/7), we can follow these steps:

1. First, we calculate the sum of 2/7 and 5/21. 2. Then, we calculate the sum of 1 and 4/7. 3. Finally, we divide the result from step 1 by the result from step 2.

Let's proceed with the calculations:

1. Sum of 2/7 and 5/21: - 2/7 + 5/21 = (2*3)/(7*3) + 5/21 = 6/21 + 5/21 = 11/21.

2. Sum of 1 and 4/7: - 1 + 4/7 = 7/7 + 4/7 = 11/7.

3. Dividing the result from step 1 by the result from step 2: - (11/21) ÷ (11/7) = (11/21) * (7/11) = 1/3.

So, the result of the expression (2/7 + 5/21) ÷ (1 + 4/7) is 1/3.

This calculation is based on the arithmetic operations and the rules of fractions.

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