Réponse:
Ex 2
A = 9-16-8+22
= 7
B = -60+60
= 0
C = -15+25
= 10
Ex 3
D = -61+22
= -39
E = 69,5-23
= 46,5
F = 14+15+16-17-18
= 10
Ex 4
G = (2,5-2,5) + (6-7) -12
= 0 -1 -12
= -13
H = 28 - (6,4+21,6) +33
= 28-28+33
= 33
j'espère que j'ai pu t'aider et bonne chance !
