Question

Efetue as adições algébricas
A)+(3)-(-5)-(-10)
B)(+2 )+(-6)-(+5)+(+2)
C)(-5)-(-8)+(-7)-(-9)+(-3)
D)(-2)-(-4)-(+7)-(-2)+(-2)

Answer 1

a) 3+5+10 = 18
b) 2-6-5+2 = 4 - 11 = -7
c) -5+8-7+9-3 = -15+17 = 2
d) -2+4-7+2-2 = -11+6 = -5

Answer 2

A)
= +(3)-(-5)-(-10)
= 3+5+10
= 18

B)
= (+2 )+(-6)-(+5)+(+2)
= 2 - 6 - 5 + 2
= 4 - 11
= - 7

C)
= (-5)-(-8)+(-7)-(-9)+(-3)
= - 5 + 8 - 7 + 9 - 3
= 3 + 2 - 3
= 2

D)
= (-2)-(-4)-(+7)-(-2)+(-2)
= - 2 + 4 - 7 + 2 - 2
= 2 - 7 + 0
= - 5