Sagot :
Réponse :
Bonjour
Explications étape par étape
A = 2/3 -7/3 X 8/21
A = 2/3 -56/63
A = 42/63 -56/63
A= -14/23
B = (3/4 -5/6) X 3/2
B = (18/24 -20/24) X 3/2
B = -2/24 X 3/2
B = -6/48
B = -3/24
B = -1/8
C = 11 : (2/3 -5/2)
C = 11 : ( 4/6 -15/6)
C = 11 : -11/6 = 11 X 6/-11
C = -66/11
C = -6
D = 3/7 -15/7 : 5/24
D = 3/7 -15/7 X 24/5
D = 3/7 -360/35
D = 15/35 -360/35
D = -345/35
D = -69/7
E = ( 11/7 -2/5) X 24/7
E = (55/35 -14/35) X 24/7
E = 41/35 X 24/7
E = 984/245
F = 25/15 X (1/18 +1/24)
F = 25/15 X (24/432 + 18/432)
F = 25/15 X 42/432
F = 1050/6480
F = 105/648
F = 35/216
Voilà Bon Courage :)