Question

resolva as somas algébricas:
a)-7+8= b)-9+5-6-5+3+9=
c)11-3+3-11+7-5+7=
Me ajudem?​

Answer 1

a)-7+8=

+(8-7)=

1

b)-9+5-6-5+3+9=

-3

c)11-3+3 -11+7-5+7=

9

espero ter ajuado!