Question

a);
8-
1
19
4
b) 1+
HFF
1-
1+
6
9
S
7+
efettet
544
93

Answer 1

Ответ:



Пошаговое объяснение:

2-3/4=1 1/4

1÷1 1/4=1×4/5=4/5

4-4/5=1/5

4÷1/5=4×5=20

6-20=-14

19÷(-14)=19×(-1/14)=-19/14=-1 5/14

8-(-1 5/14)=8+1 5/14=9 5/14

1÷9 5/14=1×14/131=14/131

Answer 2

Пошаговое объяснение:

Начнем с конца:

а)

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

2) 1 : 1 1/4 = 1 : 5/4 = 1 * 4/5 = 4/5

3) 4 - 4/5 = 3 5/5 - 4/5 = 3 1/5

4) 4 : 3 1/5 = 4 : 16/5 = 4 * 5/16 = 20/16 = 1 4/16 = 1 1/4

5) 6 - 1 1/4 = 5 4/4 - 1 1/4 = 4 3/4

6) 19 : 4 3/4 = 19 : 19/4 = 19 * 4/19 = 76/19 = 4

7) 8 - 4 = 4

8) 1 : 4 = 1/4

б)

1) 1 - 1/3 = 3/3 - 1/3 = 2/3

2) 1 : 2/3 = 1 * 3/2 = 3/2 = 1 1/2

3) 1 + 1 1/2 = 2 1/2

4) 1 : 2 1/2 = 1 : 5/2 = 1 * 2/5 = 2/5

5) 1 - 2/5 = 5/5 - 2/5 = 3/5

6) 1 : 3/5 = 1 * 5/3 = 5/3 = 1 2/3

7) 1 + 1 2/3 = 2 2/3