Question

Срочно!!!!! Даю 15 баллов​ Вычислите 6 4/9 + 3 5/9;10 11/12 + 5 14/19; 2 3/13 + 2 11/12; 1 5/8 + 3 7/8 ; 1 - 3/11; 1 - 13/40; 4 - 1 4/7;10-3/10;5 2/7 - 2 5/7;14 6/20 - 8 12/20; 3/14 - 5 9/14;7 10/21 - 4 16/21; 14 8/31 - 6 8/31; (12 5/22+7 17/22)-(13 7/23 - 9 15/23)​

Answer 1

Ответ:

Пошаговое объяснение:

6 4/9 + 3 5/9=9 9/9=10

10 11/12 + 5 14/19=10 209/228 +5 168/228=15 377/228=16 149/228    

2 3/13 + 2 11/12=2 36/156 +2 143/156=4 179/156=5 23/156

1 5/8 + 3 7/8=4 12/8=5 1/2=5,5

1 - 3/11=11/11 -3/11=8/11

1 - 13/40=40/40 -13/40=27/40=0,675

4 - 1 4/7=3 7/7 -1 4/7=2 3/7

10-3/10=10-0,3=9,7

5 2/7 - 2 5/7=4 9/7 -2 5/7=2 4/7

14 6/20 - 8 12/20=14 3/10 -8 6/10=14,3-8,6=5,7

3/14 - 5 9/14=-5 6/14=-5 3/7

7 10/21 - 4 16/21=6 31/21 -4 16/21=2 15/21=2 5/7

14 8/31 - 6 8/31=8

(12 5/22+7 17/22)-(13 7/23 - 9 15/23)​=19 22/22 -(12 30/23 -9 15/23)=20-3 15/23=19 23/23 -3 15/23=16 8/23

Answer 2

Давайте решим каждое уравнение по очереди:

1. 6 4/9 + 3 5/9 = (6 + 3) + (4/9 + 5/9) = 9 + 9/9 = 9 + 1 = 10

2. 10 11/12 + 5 14/19 = (10 + 5) + (11/12 + 14/19) = 15 + (209/228 + 168/228) = 15 + 377/228 = 15 + 1 149/228

3. 2 3/13 + 2 11/12 = (2 + 2) + (3/13 + 11/12) = 4 + (36/156 + 143/156) = 4 + 179/156 = 4 + 1 23/156

4. 1 5/8 + 3 7/8 = (1 + 3) + (5/8 + 7/8) = 4 + 12/8 = 4 + 1 4/8 = 4 + 1 1/2 = 5 1/2

5. 1 - 3/11 = 11/11 - 3/11 = 8/11

6. 1 - 13/40 = 40/40 - 13/40 = 27/40

7. 4 - 1 4/7 = (4 * 7) - (1 * 7 + 4/7) = 28 - (7 + 4/7) = 28 - 7 4/7 = 20 3/7

8. 10 - 3/10 = 100/10 - 3/10 = 97/10 = 9 7/10

9. 5 2/7 - 2 5/7 = (5 - 2) + (2/7 - 5/7) = 3 - 3/7 = 2 4/7

10. 14 6/20 - 8 12/20 = (14 - 8) + (6/20 - 12/20) = 6 - 6/20 = 5 18/20 = 5 9/10

11. 3/14 - 5 9/14 = (0 - 5) + (3/14 - 9/14) = -5 - 6/14 = -5 - 3/7 = -5 3/7

12. 7 10/21 - 4 16/21 = (7 - 4) + (10/21 - 16/21) = 3 - 6/21 = 3 - 2/7 = 2 5/7

13. 14 8/31 - 6 8/31 = (14 - 6) + (8/31 - 8/31) = 8 + 0 = 8

14. (12 5/22 + 7 17/22) - (13 7/23 - 9 15/23) = (12 + 7) + (5/22 + 17/22) - (13 + 9) - (7/23 - 15/23) = 19 + (22/22) - 22 - (-8/23) = 19 + 1 - 22 + 8/23 = -2 8/23

Пожалуйста, проверьте правильность результатов, и если у вас есть еще вопросы, не стесняйтесь задать.