Question

Выполните вычитание 19 8\9-8 1\9;8 3\4-7 3\4;3-1 12\13;4- 2 2\3;17 3\8-8 3\8;5 7\8-3;

Answer 1

$19\frac{8}{9} - 8\frac{1}{9} =11\frac{7}{9} \\\\8\frac{3}{4} - 7\frac{3}{4} = 1\\\\3- 1 \frac{12}{13} = 3\frac{13}{13}- 1 \frac{12}{13}= 2 \frac{1}{13}\\\\4-2\frac{2}{3} = -3\frac{3}{3}-2\frac{2}{3}=1\frac{1}{3}\\\\17\frac{3}{8} - 8\frac{3}{8} = 9\\\\5\frac{7}{8} - 3 = 5\frac{7}{8} - 2\frac{8}{8} = 4\frac{15}{8} - 2\frac{8}{8} = 2\frac{7}{8}$

Answer 2

Давайте выполним данные вычитания:

1. 19 8/9 - 8 1/9 = (19 - 8) + (8/9 - 1/9) = 11 + 7/9 = 11 7/9

2. 8 3/4 - 7 3/4 = (8 - 7) + (3/4 - 3/4) = 1 + 0 = 1

3. 3 - 1 12/13 = (3 - 1) - 12/13 = 2 - 12/13 = 1 1/13

4. 4 - 2 2/3 = (4 - 2) - 2/3 = 2 - 2/3 = 1 1/3

5. 17 3/8 - 8 3/8 = (17 - 8) + (3/8 - 3/8) = 9 + 0 = 9

6. 5 7/8 - 3 = (5 - 3) + 7/8 = 2 + 7/8 = 2 7/8

Итак, результаты вычитаний:

1. 19 8/9 - 8 1/9 = 11 7/9
2. 8 3/4 - 7 3/4 = 1
3. 3 - 1 12/13 = 1 1/13
4. 4 - 2 2/3 = 1 1/3
5. 17 3/8 - 8 3/8 = 9
6. 5 7/8 - 3 = 2 7/8