Réponse:
A = (4-2) ÷ (-5 + 7)
A = 2 ÷ (-5+7)
A = 2 ÷ 2
A = 1
Bonjour,
A=(4 - 2 × (-1)) ÷ (-5 + 7)
A=(4-2×(-1)÷2
A=(2×(-1)÷2
A= -2÷2
A= -1
