Sagot :
Réponse:
A=1\4-3\4=2\4
B=3\5+4\10=6\10+4\10=10\10
voilà j'espère avoir t'aidé
Bonjour !
A = 1/4 - 3/4
A = (1 - 3) / 4
A = -2/4
A = (-2/2) / (4/2)
A = -1/2
B = 3/5 + 4/10
B = (3*2)/(5*2) + 4/10
B = 6/10 + 4/10
B = (6 + 4) / 10
B = 10/10
B = 1
C = 5/24 - (-3)/5
C = (5*5 )/ (24*5) - (-3*24 / (5*24)
C = 25/120 - (-72)/120
C = (25 - (-72)) / 120
C = (25 + 72) / 120
C = 97/120
D = -30/20 + 22/60
D = (-30*3) / (20*3) + 22/60
D = -90/60 + 22/60
D = (-90 + 22) / 60
D = -68/60
D = -17/15
J'espère t'avoir aidé. Bon courage !