Efectuar ??? a) [6-(-4)] - 10 =
b) 20-[6+(-4]=
c) (-30) - [(-7) + (-4)]=
d) [(-3) +(-2)]- [9+(-7)]
Ayudaaaa
b) 20-[6+(-4]=
c) (-30) - [(-7) + (-4)]=
d) [(-3) +(-2)]- [9+(-7)]
Ayudaaaa
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20-[6-4]=
20-[2]=
20-2=
18 es la respuesta
c) (-30) - [(-7) + (-4)]=
(-30)-[ (+3)]=
-30-(+3)=
30+3=
33 es la respuesta