Question

3x - 82 = 2-x

305 + x + 14 = 48 - ( x - 23)

giúp mik nhé

 

Answer 1

3x - 82 = 2-x

=> 3x+x = 2+82

=> 4x = 84

=> x = 84 : 4

=> x = 21

vậy_____

305 + x + 14 = 48 - ( x - 23)

=> 319 + x = 48 - x + 23

=> 319 + x = 71 - x

=> x+x = 71 - 319

=> 2x = -248

=> x = -248 : 2

=> x = -124

vậy____

Answer 2

3x - 82 = 2 - x

<=> 3x + x = 2 + 82

<=> 4x = 84

<=> x = \(\frac{84}{4}\)= 21

Answer 3

3x+x=2+82           305+x+14=48-x+23

4x=84                  x+x=48+23-305-14

x=84:4                  2x=71-305-14

x=21                    2x=-234-14

                            2x=-248

                             x=-248:2

                             x=-124

Answer 4

3x - 82 = 2-x

=> 3x+x = 2+82

=> 4x = 84

=> x = 84 : 4

=> x = 21

vậy_____

305 + x + 14 = 48 - ( x - 23)

=> 319 + x = 48 - x + 23

=> 319 + x = 71 - x

=> x+x = 71 - 319

=> 2x = -248

=> x = -248 : 2

=> x = -124

vậy____