944. Найдите значения выражений: 3
4
2.
1
10
1
9
25
5
16
7
4
: 99 98
23
25
5
1) 1
25
2) 1 +
7
23
+
45
4 5
+
11 22
3)
: 11
18.
15
12
) (1
)
7)
• 15 - 1315:12-1);
1
57
3
3
5) 1
13
14
+
65
6
: 21 – 18
13
10
11
55
2
6) 6
5
77
17 2
+ 1
35
8
9
11
18​

Пошаговое объяснение:

1. (1 3/25 -4/25)÷(1 -2/5)·(10-9 1/6)=1 1/3

1.1. 1 3/25 -4/25=28/25 -4/25=24/25

1.2. 1 -2/5=5/5 -2/5=3/5

1.3. 10-9 1/6=9 6/6 -9 1/6=5/6

1.4. 24/25 ÷3/5=24/25 ·5/3=8/5

1.5. 8/5 ·5/6=4/3=1 1/3

2. (1 +7/23)·(2 -4/25)÷(99-98 1/5)=3

2.1. 1 +7/23=1 7/23=30/23

2.2. 2 -4/25=50/25 -4/25=46/25

2.3. 99-98 1/5=98 5/5 -98 1/5=4/5

2.4. 30/23 ·46/25=(6·2)/5=12/5

2.5. 12/5 ÷4/5=12/5 ·5/4=3

3. (7/15 +23/45)·(1 4/11 +5/22)÷(11 5/18 -7 1/9)=28/75

3.1. 7/15 +23/45=21/45 +23/45=44/45

3.2. 1 4/11 +5/22=1 8/22 +5/22=1 13/22=35/22

3.3. 11 5/18 -7 1/9=11 5/18 -7 2/18=4 3/18=4 1/6=25/6

3.4. 44/45 ·35/22=(2·7)/9=14/9

3.5. 14/9 ÷25/6=14/9 ·6/25=(14·2)/(3·25)=28/75

4. (15-13 4/97)·(1 4/5 +7/50)÷(12 7/10 -7)=2/3

4.1. 15-13 4/97=14 97/97 -13 4/97=1 93/97=190/97

4.2. 1 4/5 +7/50=1 40/50 +7/50=1 47/50=97/50

4.3. 12 7/10 -7=5 7/10=57/10

4.4. 190/97 ·97/50=19/5

4.5. 19/5 ÷57/10=19/5 ·10/57=2/3

5. (1 3/13 +14/65)÷(21-18 6/13)÷(5 10/11 -5 3/55)=2/3

5.1. 1 3/13 +14/65=1 15/65 +14/65=1 29/65=94/65

5.2. 21-18 6/13=20 13/13 -18 6/13=2 7/13=33/13

5.3. 5 10/11 -5 3/55=5 50/55 -5 3/55=47/55

5.4. 94/65 ÷33/13=94/65 ·13/33=94/(5·33)=94/165

5.5. 94/165 ÷47/55=94/165 ·55/47=2/3

6. (6 2/11 -5 1/77)·(17/35 +1 2/5)·(8 1/9 -5 7/18)=6

6.1. 6 2/11 -5 1/77=6 14/77 -5 1/77=1 13/77=90/77

6.2. 17/35 +1 2/5=17/35 +1 14/35=1 31/35=66/35

6.3. 8 1/9 -5 7/18=8 2/18 -5 7/18=7 20/18 -5 7/18=2 13/18=49/18

6.4. 90/77 ·66/35=(18·6)/(7·7)=108/49

6.5. 108/49 ·49/18=6