Question

Rozwiąż równania:

-2x= -4

2x+4=14

6-2x=18

20=x+5

-14+3x=7

6+4x=30

3x-5=4+2x

-5x-17=-9x+3

2x-4+5x=x+2

7x+2=5+3x+9

-5x+10=-2x-8

7x+14=5x-22

2(x-3)+3 (4-x) =5

Dam naj. Dzięki.

Answer 1

-2x= -4 | :(-2)

x=-2

 

2x+4=14 | -4

2x=10 |:2

x=5

 

6-2x=18 |-6

-2x=12 | :(-2)

x=-6

 

20=x+5|-5

x=15

 

-14+3x=7 |+14

3x=21 | :3

x=7

 

6+4x=30 |-6

4x=24| :4

x=6

 

3x-5=4+2x |-2x+5

x=9

 

-5x-17=-9x+3 |+9x+17

4x=20|:4

x=5

 

2x-4+5x=x+2 |-x+4

6x=6|:6

x=1

 

7x+2=5+3x+9 | -3x-2

4x=12|:4

x=3

 

-5x+10=-2x-8 |+2x-10

-3x=-18 |:(-3)

x=6

 

7x+14=5x-22 |-5x-14

2x=-36|:2

x=-18

 

2(x-3)+3 (4-x) =5

2x-6+12-3x=5

-x+6=5|-6

-x=-1|:(-1)

x=1

 

Answer 2

-2x= -4 |:(-2) 

x = 2 

 

2x+4=14

2x = 14 - 4 

2x = 10 |/2

x = 5

 

6-2x=18

-2x = 18 - 6 

-2x = 12 |/(-2)

x = -6 

 

20=x+5

20 - 5 = x

x = 15

 

-14+3x=7

3x = 7 + 14

3x = 21 |/3

x = 7

 

6+4x=30

4x = 30 - 6 

4x = 24 |/4 

x = 6 

 

3x-5=4+2x

3x - 2x = 4 + 5 

x = 9

 

-5x-17=-9x+3

-5x + 9x = 17 + 3

4 x = 20 |/ 4

x = 5

 

2x-4+5x=x+2

2x + 5x - x = 4 + 2

6x = 6 |/6 

x = 1

 

7x+2=5+3x+9

7x - 3x = 5 + 9 - 2 

4x = 12 |/4

x = 3

 

-5x+10=-2x-8

-5x + 2x = -8 - 10 

- 3x = - 18 |/(-3) 

x = 6 

 

7x+14=5x-22

7x - 5x = -22 - 14 

2x = - 36 |/2

x = - 18 

 

2(x-3)+3 (4-x) =5

2x - 6 + 12 - 3x = 5 

-x = 5 - 12 + 6 

-x = -1 |*(-1) 

x = 1