Question

A) (+4)+(-6)-(+7)-(-6)+(+7)=
B) (-3)-(-5)+(-6)+(+8)-(-4)=
C) (-3+8)-(-3+8)+(5-6)=

Answer 1

Resposta:

a) -2 -7 +6 + 7

-9 +6 +7

-3 +7

4

b) -3 +5 -6 + 8 + 4

2 -6 +8 +4

-4 +8 +4

4 + 4

8

c) 5 +3 -8 +5 -6

8 -8 +5 -6

0 +5 -6

-1