Question

Efetue as adições algébricas.

a) (−9) + (−5) − (+7)
b) (−4) − (−6) − (+3)
c) (+32) − (−11) − (+15)
d) (+3) − (+5) − (−10)
e) (+2) + (−6) − (+5) + (+2

Answer 1

Resposta:

a) (-9) + (-5) - (+7)

    - 9 - 5 - 7

       - 14 - 7

        - 21

➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳

b) (-4) - (-6) - (+3)

   - 4 + 6 - 3

     2 - 3

      - 1

➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳

c) (+32) - (-11) - (+15)

     32 + 11 - 15

       43 - 15

          28

➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳

d) (+3) - (+5) - (-10)

     3 - 5 + 10

      - 2 + 10

          8

➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳➳

e) (+2) + (-6) - (+5) + (+2)

      2 - 6 - 5 + 2

        - 4 - 5 + 2

          - 9 + 2

              - 7