Question

Các bạn ơi !! Giúp mk câu này vs !!

8x - 6x - 15 = 13

19 + 25 = x + x + 2x - 4

49 - 14 = 6x - x + 5 

     Thanks các bạn nhìu nha !!

Answer 1

a ) 8x - 6x - 15 = 13

      2x = 13 + 15

       2x = 28

            x = 28 / 2   => x = 14

b) 19 + 25 = x + x + 2x -4

 19 + 25 + 4 = 4x

 48 = 4x

=> x = 48/4 = 12

c ) 49 - 14 = 6x - x + 5

  49 - 14 -5 = 5x

  30 = 5x

x = 30/5

=> x = 6

Answer 2

8x - 6x - 15 = 13

=> 2x = 28

=> x = 14

19 + 25 = x + x + 2x - 4

=> 44 = 4x - 4

=> 44 + 4 = 4x

=> 48 = 4x

=> x = 12

49 - 14 = 6x - x + 5

=> 35 = 5x + 5

=> 5x = 30

=> x = 6

Answer 3

+)8x - 6x - 15 = 13

2x - 15 = 13

2x = 28

x = 14

+) 19 + 25 = x + x + 2x - 4

44 = 4x - 4

48 = 3x

x =12

+) 49 - 14 = 6x - x + 5

35 = 5x + 5

40 = 5x

x = 8

Tk mk nha! 

Answer 4

8x - 6x - 15 = 13

2x - 15 =13

2x = 13 + 15

2x = 28

x = 28 : 2

x = 14

19 + 25 = x + x + 2x - 4

44 = 4x - 4

44 + 4 = 4x

48 = 4x

48 : 4 = x

12 = x

=> x = 12

49 - 14  = 6x - x + 5

35 = 5x + 5

35 - 5 = 5x

30 = 5x

30 : 5 = x

6 = x

=> 6