First, let's simplify the fraction inside the parentheses:
2/7 + 5/21 = (6/21 + 5/21) = 11/21
Now, we can rewrite the expression as:
(11/21) ÷ 1 4/7
To divide by a mixed number, we first need to convert the mixed number to an improper fraction:
1 4/7 = 7/7 + 4/7 = 11/7
Now, we can perform the division:
(11/21) ÷ (11/7) = (11/21) * (7/11) = 77/231 = 1/3
Therefore, the result of the expression is 1/3.
First, let's simplify the fraction inside the parentheses:
2/7 + 5/21 = (6/21 + 5/21) = 11/21
Now, we can rewrite the expression as:
(11/21) ÷ 1 4/7
To divide by a mixed number, we first need to convert the mixed number to an improper fraction:
1 4/7 = 7/7 + 4/7 = 11/7
Now, we can perform the division:
(11/21) ÷ (11/7) = (11/21) * (7/11) = 77/231 = 1/3
Therefore, the result of the expression is 1/3.