Pouvez vous m’aider svp 4ÈME maths

(-2.4) + (-3.5) - (-4.6) + (-5.7)

= -2.4 - 3.5 + 4.6 - 5.7 ← Ecriture simplifiée

= -2.4 + 4.6 - 3.5 - 5.7

= 2.2 - 3.5 - 5.7

= -3.5 + 2.2 - 5.7

= -1.3 - 5.7

= -7

= 4.6 - 2.4 - 3.5 - 5.7

= 2.2 - 3.5 - 5.7

= -5.7 - 3.5 + 2.2

= -9.2 + 2.2

= -7