Réponse :
bonjour
tu mettras niveau collège STP
A = 7/3 - 4/3 : 8/5
A = 7/3 - 4/3 x 5/8
A = 7/3 - 20/24
A = 56/24 - 20/24
A = 36 /24
A = 3/2
B = - 4/9 * 1/5 : 3/7
B = - 4/9 * 1/5 * 7/3
B = - 28/135
C = - 8/3 - 5/6 + 7/4
C = - 64/24 - 20/24 + 42/24
C = - 42/24 = - 7/4
Explications étape par étape
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Réponse :
bonjour
tu mettras niveau collège STP
A = 7/3 - 4/3 : 8/5
A = 7/3 - 4/3 x 5/8
A = 7/3 - 20/24
A = 56/24 - 20/24
A = 36 /24
A = 3/2
B = - 4/9 * 1/5 : 3/7
B = - 4/9 * 1/5 * 7/3
B = - 28/135
C = - 8/3 - 5/6 + 7/4
C = - 64/24 - 20/24 + 42/24
C = - 42/24 = - 7/4
Explications étape par étape