Réponses

Meilleure réponse !
2014-09-08T19:53:50+02:00
A = 5 + 8 x ( -2 ) + 6
= 5 - 16 + 6
= -11 + 6
= -5

B = 4 - 7 x ( -3 + 8 )
= 4 - 7 x 5
= 4 - 35
= -31

C = ( 3 - 7 ) x ( 5 + 2 )
= -4 x 7
= -28

D = ( -3 - 6 ) ( 6 - 8 )
= -9 x (-2)
= 18

E = 5 - ( 2 x 7 - 13 )
= 5 - ( 14 - 13 )
= 5 - 1
= 4

F = 30 - ( 7 - 2 x 8 )
= 30 - ( 5 x 8 )
= 30 - 40
= -10