2) Calcule:

a) 6-1+2=

b) 7-9-4=

c)-7-3+7=

d) 9+4+3+2-4=

e) 4+15-7-9-5+10=

1) 14-4-3+6+1-11 =

g) 10-13-6 + 10 + 13-8=

me ajudem pfv:) ​


Resposta :