Répondre :
Bonsoir;
1-2x/3=5/4
1-5/4 = 2x/3
4/4 -5/4 = 2x/3
-1/4 = 2x/3
-1/4 *3 = 2x
-3/4 = 2x
x=( -3/4)/2
x = -3/4 *1/2
x = -3/8
Bonsoir;
1-2x/3=5/4
1-5/4 = 2x/3
4/4 -5/4 = 2x/3
-1/4 = 2x/3
-1/4 *3 = 2x
-3/4 = 2x
x=( -3/4)/2
x = -3/4 *1/2
x = -3/8