calculer en simplifiant si possible: A= -40/6×16/40 B= -33/5×(-25/11) C=- 7/12×(-4/21) D= 1/-5×(-7/4)×8/14.Aider moi s il vous plaît g vraiment besoin d aide ​

Bonjour,

A = -40/6 x 16/40

A = (-40 x 16)/(6 x 40)

A = (-1 x 40 x 8 x 2)/(2 x 3 x 40)

A = (-1 x 8)/3

A = -8/3

B = -33/5 x (-25/11)

B = (-33 x (-25))/(5 x 11)

B = (-3 x 11 x (-5) x 5)/(5 x 11)

B = (-3 x (-5))/1

B = 15/1

C = 7/12 x (-4/21)

C = (7 x (-4))/(12 x 21)

C = (7 x (-1) x 4)/(3 x 4 x 7 x 3)

C = -1/(3 x 3)

C = -1/9

D = 1/(-5) x (-7/4) x 8/14

D = (1 x (-7) x 8)/(-5 x 4 x 14)

D = (1 x (-1)  x 7 x 4 x 2)/(-1 x 5 x 4 x 7 x 2)

D = 1/5

N'hésite pas si tu as des questions !