Bonjour pouvez vous m'aider svp calculer les expressions suivantes A= 7/3-4/3÷8/5 B=-4/9x1/5÷3/7 C= - 8/3÷-5/6+7/4 Merci d'avance ​

Bonsoir

calculer les expressions suivantes

A= 7/3-4/3÷8/5

A = 7/3 - 4/3 x 5/8

A = 7/3 - 4/8 x 5/3

A = 7/3 - 4/(2 x 4) x 5/3

A = 7/3 - 1/2 x 5/3

A = (7 x 2)/(3 x 2) - 5/6

A = 14/6 - 5/6

A = 9/6

A = (3 x 3)/(2 x 3)

A = 3/2

B=-4/9x1/5÷3/7

B = -4/45 x 7/3

B = -28/135

C= - 8/3÷-5/6+7/4

C = -8/3 x -6/5 + 7/4

C = 48/15 + 7/4

C = (48 x 4)/(15 x 4) + (7 x 15)/(4 x 15)

C = 192/60 + 105/60

C = 297/60

C = (3 x 99)/(3 x 20)

C = 99/20