Question

Porfavor doy corona

Answer 1

Respuesta:

a) -(+4-9+10)+(-4+9)= -(+5)+(+5)=-5+5=0

b) (-7+6-5)-(+7-9+3)= (-6)-(+1)= -6-1= -7

c) (+3-3)+(-4+2-5) = 0+(-7)= 0-7 = -7