bonjour qui pourrez m'aider pour l exercice 5 svp ?​

A = 2/5 - 4/5 x 11 /3

A = 2/5  - 44/15

A =  6/15  - 44 /15 = -  38/15  

B = 1/2 x 7/4 - 6

B = 7/8 - 48/8  = - 41/8

C = 3/2  - ( 7/3 : 1/4)

C = 3/2 - ( 7/3 x 4)

C = 3/2 - 28/3

C = 9/6 - 56/6 = -  47/6

D =  - 3/35 x - 45/24

D =  135/840  = 9/56

Bonjour,

A = 2/5 - 4/5 × 11/3

  = 2/5 - (4×11)/(5×3)

  = 2/5 - 44/15

  = (2×3)/(5×3) - 44/15

  = 6/15 - 44/15

  = -38/15

B = 1/2 × 7/4 - 6

  = (1×7)/(2×4) - 6

  = 7/8 - 6

  = 7/8 - (6×8)/8

  = 7/8 - 48/8

  = -41/8

C = 3/2 - (7/3)/(1/4)

  = 3/2 - 7/3 × 4

  = 3/2 - 28/3

  = 9/6 - 56/6

  = -47/6

D = -3/35 × (-45/24)

   = (3×45) / (35×24)

   = (3×9×5) / (7×5×3×8)

   = 9/(7×8)

   = 9/56