Question

－2x － 8 ＝ － 24
| 2x － 1 | ＝ 24

Answer 1

Răspuns:

-2x = -24 + 8

-2x = -16 ( * -1 ) - inmultim cu -1

2x = 16

x = 16/2

x = 8

| 2x - 1 | = 24

Caz 1: 2x - 1 = 24

2x = 25

x = 25/2

x = 12.5

Caz2:

-(2x-1) = 24

-2x + 1 = 24

-2x = 24 - 1

-2x = 23

x = 23/-2

x = -11.5