Sagot :
bonjour
A = 15/4 x 4 /5
A = 60/20
A = 3
B = - 2 /9 x 5 /3
B = - 10 / 27
C = 8/3 - 2 /5
C = 40/15 - 6/15
C = 34 /15
d = - 2 /7 : 5 /2
d = - 2 /7 x 2/5
d = - 4 / 35
Bonjour
Calculer:
A= 15/4 ×4/5 = 15/5= 3 barre 4 et 4 puis simplifie 15 et 5
B= -2/9 ×5/3 = (-2x5)/(9x3)= -10/27
C= 8/3 -2/5 = (8x5-2x3)/(3x5)= 34/15
D= -2/7/5/2= -2/7 x 2/5= (-2x2)/(7x5)= -4/35