Question

помогите пожалуйста ​

Answer 1

переводим смешанные числа в неправильные дроби. потом их сводим к общему знаменателю.

$\displaystyle1) \: \: 2 \dfrac{1}{2} + 3 \dfrac{2}{3} = \dfrac{5}{2} + \frac{11}{3} = \frac{15 + 22}{6} = \frac{37}{6} = 6 \frac{1}{6} . \\ 2)1 \frac{3}{5} + 2 \frac{1}{2} = \frac{8}{5} + \frac{5}{2} = \frac{16 + 25}{10} = \frac{41}{10} = 4 \frac{1}{10} = 4.1. \\ 3)6 \frac{8}{19} + 5 \frac{4}{57} = \frac{122}{19} + \frac{289}{57} = \frac{366 + 289}{57} = \frac{655}{57} = 11 \frac{28}{57} .$

4) 8 7/25 + 2 8/75 = 207/25 + 158/75 = (621+158)/75 = 779/75 = 10 29/75.

5) 7 5/44 + 2 2/55 = 313/44 + 112/55 = (1565+448)/220 = 2013/220 = 183/20 = 9 3/20 = 9,15.

6) 3 5/66 + 2 6/11 = 203/66 + 28/11 = (203+168)/66 = 371/66 = 5 41/66.

Answer 2

Ответ:

Пошаговое объяснение:

1)

2. 1/2 + 3. 2/3 = 2. 3/6 + 3. 4/6 = 5. 7/6 = 6. 1/6

2)

1. 3/5 + 2. 1/2 = 1. 6/10 + 2. 5/10 = 3. 11/10 = 4. 1/10

3)

6. 8/19 + 5. 4/57 = 6. 24/57 + 5. 4/57 = 11. 28/57

4)

8. 7/25 + 2. 8/75 = 8. 21/75 + 2. 8/75 = 10. 29/75

5)

7. 5/44 + 2. 2/55 = 7. 25/220 + 2. 8/220 = 9. 33/220 = 9. 3/20

6)

3. 5/66 + 2. 6/11 = 3. 5/66 + 2. 36/66 = 5. 41/66