Question

решите уравнения
3=4(x+2)
-7=5(x+5)
9=5(x+9)
7(x-1)=3x
9(x+7)=-x
5(x-3)=4x
4(x+6)=x
-x=4(6+x)
7(-3+2x)=-6x-1
2(7+9x)=-6x+2

Answer 1

4(х+2) = 3
4х + 8 = 3
4х = - 5
х = -1.25

-7=5(x+5)
25х + 25 = -7
25х = 32
х = 1,28

9=5(x+9)
5х + 45 = 9
5х = -36
х = 7.2

7(x-1)=3x
-3х + 7х = 7
4х = 7
х = 1.75

9(x+7)=-x
9х + 63 + х =0
10х = -63
х = -6.3

5(x-3)=4x
5х - 15 - 4х = 0
х =15

4(x+6)=x
4х - х = -24
3х = -24
х = -8

-x=4(6+x)
-х - 4х = 24
-5х = 24
х = -4.8

7(-3+2x)=-6x-1
-21 + 14х +6х = -1
20х = -1 + 21
20х = 20
х =1

2(7+9x)=-6x+2
14 + 18х +6х =2
24х = -12
х = -0.5
Отметь лучшим, пожалуйста

Answer 2

1) 4(х + 2) = 3         2) 5(х + 5) = - 7        3) 5(х + 9) = 9

4х + 8 = 3                5х + 25 = - 7             5х + 45 = 9

4х = 3 - 8                 5х = - 7 - 25              5х = 9 - 45

4х = - 5                    5х = - 32                    5х = - 36 

х = - 5 : 4                 х = - 32 : 5                 х = - 36 : 5

х = - 1,25                 х = - 6,4                     х = - 7,2

4) 7(х - 1) = 3х        5) 9(х + 7) = - х          6) 5(х - 3) = 4х

7х - 7 = 3х               9х + 63 = - х               5х - 15 = 4х

7х - 3х = 7               9х + х = - 63               5х - 4х = 15 

4х = 7                      10х = - 63                   х = 15

х = 7 : 4                    х = - 63 : 10

х = 1,75                    х = - 6,3 

7) 4 (х + 6) = х         8) 7(- 3 + 2х) = - 6х - 1       9) 2(7 + 9х) = - 6х + 2

4х + 24 = х               - 21 + 14х = - 6х - 1            14 + 18х = - 6х + 2

4х - х = - 24              14х + 6х = - 1 + 21              18х + 6х = 2 - 14

3х = - 24                    20х = 20                              24х = - 12

х = - 24 : 3                 х = 20 : 20                           х = - 12 : 24

х = - 8                        х = 1                                    х = - 0,5