Bonjour,

(2x + 3)/(4x - 1) = 3/4

2x + 3 = 3/4(4x - 1)

2x + 3 = 12x/4 - 3/4

2x + 3 = 3x - 3/4

3 = x - 3/4

12/4 = x - 3/4

x = 3/4 + 12/4

x = 15/4 = 3,75