Answered

bonjour j' ai un petit doute pour le signe
calculs puis simplifie quand cela est possible
B= 16/3 - -11/12
C= 3+ -7/5 - 17/20

merci

Sagot :

MAUDMARINE

Bonjour,

B= 16/3 - -11/12

B = (16 x 4) / (3 x 4) + 11/12

B = 64/12 + 11/12

B = 75/12

B = (3 x 25) / (3 x 4)

B = 3/4

C= 3+ -7/5 - 17/20

C = (3 x 20) / (1 x 20) - (7 x 4) / (5 x 4) - 17/20

C = 60/20 - 28/20 - 17/20

C = 60/20 - 45/20

C = 15/20

C = (5 x 3) / (5 x 4)

C = 3/4.

Réponse :

Explications étape par étape

Bonjour,

B= 16/3 - -11/12B = (16 x 4) / (3 x 4) + 11/12B = 64/12 + 11/12B = 75/12B = (3 x 25) / (3 x 4)B = 3/4C= 3+ -7/5 - 17/20C = (3 x 20) / (1 x 20) - (7 x 4) / (5 x 4) - 17/20C = 60/20 - 28/20 - 17/20C = 60/20 - 45/20C = 15/20C = (5 x 3) / (5 x 4)C = 3/4.