Bonjour,
Exercice 1:
A= 6*(13+7)
= 6*20
= 120
B=23-4*5
=23-20
= 3
C=(3+5)*(9-7)
=8*2
=16
D=(15-7)+2+2
=8+2+2
=12
E=5-[14-(2+1)]
=5-(14-3)
=5-11
= -6
F=(3+5*7)+2+1
=(3+35)+2+1
=38+2+1
=41.
