Вариант 2. 3. Вычисли: Ж) 4 7/11 + 8 9/11, П) 3 5/4 + 3/4, У) 67 1/2 + 78

Ж) \(4 \frac{7}{11} + 8 \frac{9}{11} = (4 + 8) + (\frac{7}{11} + \frac{9}{11}) = 12 + \frac{16}{11} = 12 + 1 \frac{5}{11} = 13 \frac{5}{11}\) П) \(3 \frac{5}{4} + \frac{3}{4} = 3 + \frac{5}{4} + \frac{3}{4} = 3 + \frac{8}{4} = 3 + 2 = 5\) У) \(67 \frac{1}{2} + 78 = 145 \frac{1}{2}\)