Qqlq peut m’aider svp

bonjour

A = 8/3 + 5 : ( 1 - 2/5 )

A = 8/3 + 5 : ( 3/5 )

A = 8/3 + 5 x 5/3

A = 8/3 + 25 /3

A = 33/3

A = 11

B = 55 x 10 ³ x 2 ¹⁰ : 2 ⁹ x 10 ⁴

B = 55 x 10 ⁻¹ x 2 ¹

B = 5.5 x 2 = 11