Réponse :
Bonsoir
Explications étape par étape
t+2/3=7/2
t = 7/2 - 2/3
t = 21/6 - 4/6
t = 17/6
5y/3=1/2
5y * 2 = 3
10y = 3
Y = 3/10
8x-3=3x-1
8x - 3x = -1 + 3
5x = 2
x = 2/5
-2x=5+3x
-2x - 3x = 5
-5x = 5
X = -5/5
x = -1
x=3x-5
X - 3x = -5
-2x = -5
x = -5/-2
x = 5/2