Svp aidez moi A=(+12)+(-5)-(+4) B=(-7)+(+6)-(-9) C=(+5)-(+8)-(-2) Merci d'avance

Question

Mathématiques Publié : 2015-05-09 Mis à jour : 2018-04-13 monoti

Question

Svp aidez moi

A=(+12)+(-5)-(+4)
B=(-7)+(+6)-(-9)
C=(+5)-(+8)-(-2)

Merci d'avance

Answer 1

A = 12 - 5 - 4
A = 12 - 9
A = 3

B = -7 + 6 + 9
B = -7 + 15
B = 8

C = 5 - 8 + 2
C = 7 - 8
C = -1

Answer 2

A=(12)+(-5)-(+4)
=12-5-4
=3
B=(-7)+(+6)-(-9)
=-7+6+9
=8
C=(+5)-(+8)-(-2)
=+5-8+2
=-1