Question

Дробь 5/7 + 3/14 + 1/21 = ? ​

Answer 1

Ответ:41/42

Пошаговое объяснение:5/7*6+3/14*3+1/21*2=30/42+9/42+2/42=39/42+2/42=41/42

Answer 2

Ответ:

$\frac{41}{42}$

Пошаговое объяснение:

$\frac{5}{7} + \frac{3}{14} + \frac{1}{21} = \frac{30 +9 + 2}{42} = \frac{41}{42}$

Answer 3

To add these fractions, you first need to find a common denominator. The least common multiple (LCM) of 7, 14, and 21 is 42. So, we'll rewrite each fraction with the denominator of 42 and then add them together:

1. Rewrite 5/7 with the denominator of 42: (5/7) * (6/6) = 30/42

2. Rewrite 3/14 with the denominator of 42: (3/14) * (3/3) = 9/42

3. Keep 1/21 as it is (since the denominator is already 21).

Now, add the fractions together:

30/42 + 9/42 + 1/21 = (30 + 9 + 2) / 42 = 41/42

So, the result of the expression is 41/42.