7)Simplifique as expressões:
a)-7+10-8+12
b)-11-12-13+30
c)-1-2-3-4+5​


Resposta :

A)

[tex] - 15 + 22 = - 7[/tex]

B)

[tex] - 36 + 30 = - 6[/tex]

C)

[tex] - 10 +5 = - 5[/tex]