Question

привет помоги пж :3


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Answer 1

Ответ:

Пошаговое объяснение:

1. 3*9/63 + 2*7/63=27/63+21/63=48/63

Б) 1*3/9 + 2/9=3/9+2/9=5/9

2. А) 12/16 - 3*4/16= 12/16-12/16=0

Б) 8*3/69 - 3/69= 24/69-3/69=21/69=7/23

3. 1/17<4/13

17*4/221 - 1*13/221=68/221- 13/221=55/221

5/11<7/7

7*11/77-5*7/77=77/77-35/77=42/77

8/19<14/29

8*29/551-14*19/551= 232/551-226/551=6/551

Answer 2

1
а) 3/7+2/9=3/7*9+2/9*7=27/63+14/63=41/63
б)1/3+2/9=1/3*3+2/9=3/9+2/9=5/9

2
а)12/16-3/4=3/4-3/4=1
12/16=3/4(сокращение)
б)8/23-3/69=8/23-(3/69:3)=8/23-1/23=7/23

3.
а)1/17 и 4/13
1/17*13=13/221
4/13*17=68/221
68/221>13/221
68/221-13/221=55/221
б)5/11 и 7/7
7/7=1(или 11/11)
1>5/11
11/11-5/11=6/11
в) 8/19 и 14/29
8/19*29=232/551
14/29*19=266/551
232/551<266/551
266/551-232/551=34/551