Réponse:
A = 2/3*-3/2*1/2
A= -2/3*3/2*1/2
A= 1/3*3*1/2 A = 1/2
B= -9/4*8/3
B=-3/4*8
B=-3*2 B= 6
C=7/3*3*-5/14
C=-7/3*3*5/14
C=-7*5/14 C= -5/2
D= -12/-7*-21/-8
D= 12/7*21/8
D= 12*3/8
D= 3*3/2 D=9/2
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Réponse:
A = 2/3*-3/2*1/2
A= -2/3*3/2*1/2
A= 1/3*3*1/2 A = 1/2
B= -9/4*8/3
B=-3/4*8
B=-3*2 B= 6
C=7/3*3*-5/14
C=-7/3*3*5/14
C=-7*5/14 C= -5/2
D= -12/-7*-21/-8
D= 12/7*21/8
D= 12*3/8
D= 3*3/2 D=9/2