Question

responde a 5 pra mim.

Answer 1

a) 3-5+10=8
b) 2-6-5+2= -7
c) -5+8-7+9-3= +2
d)-2+4-7+2-12= -15

Answer 2

$a) (+3)-(+5)-(-10)=3-5+10=13-5=8 \\ \\ b)(+2)+(-6)-(+5)+(-2)=2-6-5-2=2-13=-11 \\ \\ c) (-5)-(-8)+(-7)-(-9)+(-3)= \\ \\ =-5+8-7+9-3=-15+17=2 \\ \\ d)(-2)-(-4)-(+7)-(-2)+(-12)= \\ \\ =-2+4-7+2-12=-21+6=-15$