Réponse :
Explications étape par étape
Bonsoir
Écrire sous la forme d'une fraction irréductible :
A = 2/3 : 5/7
A = 2/3 x 7/5
A = 14/15
B = 1/3 : 5
B = 1/3 x 1/5
B = 1/15
C = -4 : -2/13
C = 4 x 13/2
C = 4/2 x 13
C = 2 x 13
C = 26
D = 2/3 / (5/3)
D = 2/3 x 3/5
D = 2/5 x 3/3
D = 2/5
E = 3/(7/2)
E = 3 x 2/7
E = 6/7
F = -12/49 / (-3/-35)
F = -12/49 x 35/3
F = -35/49 x 12/3
F = (-7 x 5)/(7 x 7) x (3 x 4)/3
F = -5/7 x 4
F = -20/7
