À=7/3×9/42+2/9 B=3/4-5/4×28/10 Je vous remercie d'avance ! ​

Bjr

A = 7/3 × 9/42 + 2/9

A = 3/6 + 2/9

A = 1/2 + 2/9

A = 13/18

B = 3/4 - 5/4 × 28/10

B = 3/4 - 7/2

B = - 11/4

❤