A=7 - 7 * 5 ------------------ 6 * 2 - 5 B =(4 -6) * [5 +(3 -(-2)) * 2] C=- 7 *( - 3 ) - ( - 3 ) * ( - 5 ) -------------------------------------- 12\ ( - 3 ) -

Bonjour,

A = [tex] \frac{7-7*5}{6*2-5} = \frac{7-35}{12-5} = \frac{-28}{7} [/tex] = -4

B = (4 - 6) (5 + (3 - ( -2)) x 2) = -2 x (5 + 5 x 2) = -2 x 15 = - 30

C = [tex] \frac{7*(-3)-(-3)*(-5)}{12/(-3)-2} = \frac{-21+3*(-5)}{-4-2} = [tex] \frac{-36}{6} [/tex] = 6

Voilà, à bientôt ! :)