Répondre :
Bonjour;
2/7t -5= 3t-4/3
2t/7 -3t = -4/3 +5
2t/7 -3t*7/7 = -4/3 +5*3/3
2t/7 -21t /7 = -4/3 +15/3
= -19t/7 = 11/3
-19t = (11/3)*7
-19t = 77/3
t= (77/3)/(-19)
t = 77/3 *-1/19
t = -77/57
-18t-5=-20t+7
-18t +20t = 7+5
2t = 12
t = 12/2
t = 6
Bonjour;
2/7t -5= 3t-4/3
2t/7 -3t = -4/3 +5
2t/7 -3t*7/7 = -4/3 +5*3/3
2t/7 -21t /7 = -4/3 +15/3
= -19t/7 = 11/3
-19t = (11/3)*7
-19t = 77/3
t= (77/3)/(-19)
t = 77/3 *-1/19
t = -77/57
-18t-5=-20t+7
-18t +20t = 7+5
2t = 12
t = 12/2
t = 6