Bonsoir ,
( x - 1 ) / 4 - 5 = ( 2 x - 3 ) / 2 + 3 /4
( x - 1 ) / 4 - 20 / 4 = ( 4 x - 6 ) /4 + 3 /4
x - 1 - 4 x + 6 = 3 + 20
- 3 x = 3 + 20 + 1 - 6
- 3 x = 18
x = - 6