Réponse :
Bonjour,
A= - 7 + 2 x ( -4 )
= - 7 + ( - 8)
= - 7 - 8
= - 15
B= ( -3 -1 ) x ( - 5 + 2)
= ( - 4 ) x ( - 3)
= 12
C= 16 - 12 / ( - 3 ) + 5 x ( - 2)
= 16 - ( - 4) + ( - 10 )
= 16 + 4 - 10
= 10
D= - 6 + 4 x ( 12 + 8 / ( - 4))
= - 6 + 4 x ( 12 + ( - 2))
= - 6 + 4 x 10
= - 6 + 40
= 34
