bonjour pouvez vous m'aidez svp calculer et donner le résultat sous la forme d'une fraction la plus simple possible A=3/24-5/8 B=1/12+1/8 C= -5/12+2/9+1/6 merci

Bonsoir,

A = 3/24 - 5/8 = 3/24 - 15/24 = -12/24 = -1/2
B = 1/12 + 1/8 = 2/24 + 3/24 = 5/24
C = -5/12 + 2/9 + 1/6 = -15/36 + 8/36 + 6/36 = -1/36

Bonjour,

A=3/24-5/8
=3/24-5×3/8×3
=3/24-15/24
= -12/24
=-12÷12/24÷12
= -1/2

B=1/12+1/8
= 1×2/12×2 + 1×3/8×3
= 2/24+3/24
= 5/24

C= -5/12+2/9+1/6
= -5×9/12×9 + 2×12/9×12 + 1×18/6×18
= -45/108 + 24/108 + 18/108
= -21/108 + 18/108
= -3/108
= -3÷3/108÷3
= -1/36