Sagot :

maudmarine

Bonjour,

Pour x = 2 et y = 5

B = 10 - x (9y - x)

B = 10 - 2 (9 * 5 - 2)

B = 10 - 2 (45 - 2)

B = 10 - 2 * 43

B = 10 - 86

B = - 76.