5
Объяснение:
пока S1 < S выполняем действия:
N = N + 1
S1 = S1 + 1 / N
S = 2,13 S1 = 0 N = 0
S1 < S 0 < 2,13 ДА
N = 0 + 1 = 1
S1 = 0 + 1 / 1 = 0 + 1 = 1
S1 < S 1 < 2,13 ДА
N = 1 + 1 = 2
S1 = 1 + 1 / 2 = 1 + 0,5 = 1,5
S1 < S 1,5 < 2,13 ДА
N = 2 + 1 = 3
S1 = 1,5 + 1 / 3 = 1,5 + 0,333 = 1,833
S1 < S 1,833 < 2,13 ДА
N = 3 + 1 = 4
S1 = 1,833 + 1 / 4 = 1,833 + 0,25 = 2,083
S1 < S 2,083 < 2,13 ДА
N = 4 + 1 = 5
S1 = 2,083 + 1 / 5 = 2,083 + 0,2 = 2,283
S1 < S 2,283 < 2,13 НЕТ
S = 2,13 S1 = 2,283 N = 5
№ 1
11х = 36 - х
11х + х = 36
12х = 36
х = 36 : 12
х = 3
№ 2
7 - 2х = 3х - 18
7 - 2х - 3х = - 18
7 - 5х = - 18
5х = 7 - (- 18)
5х = 7 + 18
5х = 25
х = 25 : 5
х = 5
№ 3
0,4х + 3,8 = 2,6 - 0,8х
0,4х + 0,8х = 2,6 - 3,8
1,2х = - 1,2
х = - 1,2 : 1,2
х = - 1
№ 4
3/8х + 15 = 1/6х + 10
3/8х - 1/6х = 10 - 15
9/24х - 4/24х = - 5
5/24х = - 5
х = - 5 : 5/24
х = - 24
№ 5
- 6(2х + 1) = - 42 - 3х
- 12х - 6 = - 42 - 3х
- 12х + 3х = - 42 + 6
-9х = - 36
х = - 36 : (- 9)
х = 4
№ 6
3(х - 7) - 6(2х + 5) = 2(3х - 1) + 11
3х - 21 - 12х - 30 = 6х - 2 + 11
-9х - 51 = 6х + 9
- 9х - 6х = 9 + 51
- 15х = 60
х = 60 : (- 15)
х = - 4
№ 7
3/5 * (7/9х - 1/3) = х - 2 1/3
7/15х - 1/5 = х - 2 1/3
7/15х - х = - 2 1/3 + 1/5
7/15х - 15/15х = 1/5 - 2 1/3
- 8/15х = 1/5 - 7/3
- 8/15х = 3/15 - 35/15
- 8/15х = - 32/15
х = - 32/15 : (- 8/15)
х = - 32/15 * (- 15/8)
№ 8
8 * (5 - 3х) = 6 * (2 - 4х) + 7
−8 (−3x + 5) + 6 (−4x + 2) + 7 = 0
Нет решений
№ 9
3 5
=
2х - 1 3х - 2
3 * (3х - 2) = 5 * (2х - 1)
9х - 6 = 10х - 5
9х - 10х = - 5 + 6
-х = 1
№ 10
5ах = 14 - х
5а*4 = 14 - 4
20а = 10
а = 10 : 20
а = 1/2
а = 0,5
5
Объяснение:
пока S1 < S выполняем действия:
N = N + 1
S1 = S1 + 1 / N
S = 2,13 S1 = 0 N = 0
S1 < S 0 < 2,13 ДА
N = 0 + 1 = 1
S1 = 0 + 1 / 1 = 0 + 1 = 1
S1 < S 1 < 2,13 ДА
N = 1 + 1 = 2
S1 = 1 + 1 / 2 = 1 + 0,5 = 1,5
S1 < S 1,5 < 2,13 ДА
N = 2 + 1 = 3
S1 = 1,5 + 1 / 3 = 1,5 + 0,333 = 1,833
S1 < S 1,833 < 2,13 ДА
N = 3 + 1 = 4
S1 = 1,833 + 1 / 4 = 1,833 + 0,25 = 2,083
S1 < S 2,083 < 2,13 ДА
N = 4 + 1 = 5
S1 = 2,083 + 1 / 5 = 2,083 + 0,2 = 2,283
S1 < S 2,283 < 2,13 НЕТ
S = 2,13 S1 = 2,283 N = 5
№ 1
11х = 36 - х
11х + х = 36
12х = 36
х = 36 : 12
х = 3
№ 2
7 - 2х = 3х - 18
7 - 2х - 3х = - 18
7 - 5х = - 18
5х = 7 - (- 18)
5х = 7 + 18
5х = 25
х = 25 : 5
х = 5
№ 3
0,4х + 3,8 = 2,6 - 0,8х
0,4х + 0,8х = 2,6 - 3,8
1,2х = - 1,2
х = - 1,2 : 1,2
х = - 1
№ 4
3/8х + 15 = 1/6х + 10
3/8х - 1/6х = 10 - 15
9/24х - 4/24х = - 5
5/24х = - 5
х = - 5 : 5/24
х = - 24
№ 5
- 6(2х + 1) = - 42 - 3х
- 12х - 6 = - 42 - 3х
- 12х + 3х = - 42 + 6
-9х = - 36
х = - 36 : (- 9)
х = 4
№ 6
3(х - 7) - 6(2х + 5) = 2(3х - 1) + 11
3х - 21 - 12х - 30 = 6х - 2 + 11
-9х - 51 = 6х + 9
- 9х - 6х = 9 + 51
- 15х = 60
х = 60 : (- 15)
х = - 4
№ 7
3/5 * (7/9х - 1/3) = х - 2 1/3
7/15х - 1/5 = х - 2 1/3
7/15х - х = - 2 1/3 + 1/5
7/15х - 15/15х = 1/5 - 2 1/3
- 8/15х = 1/5 - 7/3
- 8/15х = 3/15 - 35/15
- 8/15х = - 32/15
х = - 32/15 : (- 8/15)
х = - 32/15 * (- 15/8)
х = 4
№ 8
8 * (5 - 3х) = 6 * (2 - 4х) + 7
−8 (−3x + 5) + 6 (−4x + 2) + 7 = 0
Нет решений
№ 9
3 5
=
2х - 1 3х - 2
3 * (3х - 2) = 5 * (2х - 1)
9х - 6 = 10х - 5
9х - 10х = - 5 + 6
-х = 1
х = - 1
№ 10
5ах = 14 - х
5а*4 = 14 - 4
20а = 10
а = 10 : 20
а = 1/2
а = 0,5