Réponse :
bonjour,
A = 8×3 - 13 / 21
A = 24 - 13 / 21
A = 11 / 21
B = 2/3 + 10/35
B = 2×35 + 10×3 / 35×3
B = 70 + 30/ 105
B =100/105
B = 100÷5 / 105÷5
B = 20/21
C = 4/7 - 12/77
C = 4×11 - 12 / 77
C = 44 -12/77
B = 32/77
D = 6 × (-4) - 4 / -6
D = - 36 - 4/-6
D = - 40 /- 6
D = (je simplifie par 2) D = 20/3
Explications étape par étape :
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Réponse :
bonjour,
A = 8×3 - 13 / 21
A = 24 - 13 / 21
A = 11 / 21
B = 2/3 + 10/35
B = 2×35 + 10×3 / 35×3
B = 70 + 30/ 105
B =100/105
B = 100÷5 / 105÷5
B = 20/21
C = 4/7 - 12/77
C = 4×11 - 12 / 77
C = 44 -12/77
B = 32/77
D = 6 × (-4) - 4 / -6
D = - 36 - 4/-6
D = - 40 /- 6
D = (je simplifie par 2) D = 20/3
Explications étape par étape :