3 |2x| - 9,75 = 2 1/4

3 |2x| = 2 1/4 + 9,75

3 |2x| = 2,25 + 9,75

3 |2x| = 12

|2x| = 12 : 3

|2x| = 4

2х = 4           х₁ = 2

2х = - 4         х₂ = - 2

Verified answer