Réponses

  • Utilisateur Brainly
2014-09-04T18:28:39+02:00
(+10)-(-4)+(-1)+(+5)-(+9) 
= 10 + 4 - 1 + 5 - 9
= 10 + 4 + 5 - 1 - 9
= 19 - 10
= 9
2014-09-04T18:37:27+02:00
(+ 10) - (- 4) + (- 1) + (+ 5) - (+ 9)
=  10 + 4 - 1 + 5 - 9
=  10 + 4 + 5 - 1 - 9
= 19 - 10
= 9