First, simplify each set of fractions:
3/14 + 2/21 = 9/42 + 4/42 = 13/42
5/13 + 5/39 = 15/39 + 5/39 = 20/39
Now, multiply the simplified fractions:
(13/42) × (20/39) = (13 × 20) / (42 × 39) = 260 / 1638 = 130 / 819
Therefore, (3/14 + 2/21) × (5/13 + 5/39) = 130 / 819.
First, simplify each set of fractions:
3/14 + 2/21 = 9/42 + 4/42 = 13/42
5/13 + 5/39 = 15/39 + 5/39 = 20/39
Now, multiply the simplified fractions:
(13/42) × (20/39) = (13 × 20) / (42 × 39) = 260 / 1638 = 130 / 819
Therefore, (3/14 + 2/21) × (5/13 + 5/39) = 130 / 819.