Question

Efetue as adições algébricas observando os opostos:
a) -6+8+6-4+4+1=
b)4-9+2-1+9-2=
c)5+6-7+1+7-10=
d)12-6+5-5+6-12=
e)5-6-7-9+6-2-3=
f)-18+22-7+9+16=

Answer 1

a) -6+8+6-4+4+1=
-6 -4 +8 +6 +4 +1
- 10 + 19
     +9

b)4-9+2-1+9-2=
4 + 2 + 9 - 9 - 1 - 2
+15 - 12
    +3

c)5+6-7+1+7-10=
5 + 6 + 1 + 7 - 7 -10
+19 - 17
      + 2

d)12-6+5-5+6-12=
12 + 5 + 6 - 6 - 5 -12
+23 - 23
     0


e)5-6-7-9+6-2-3=
5 + 6 - 6 -7 - 9 - 2 - 3
+11  - 27
     - 16


f)-18+22-7+9+16=
- 18 - 7 + 22 + 9 + 16
- 25 + 47
    +22