Question

3) Calcule: (valor: 1,5)
a) (−7) + (7)=
b) 6 . (−7)=
c) (−6). (7)=

Answer 1

A) (-7)+(7)= 0

B) -42

C) -42

Answer 2

Oie, Td Bom?!

a)

= (- 7) + 7

= 0

b)

= 6 . (- 7)

= - (6 . 7)

= - 42

c)

= (- 6) . 7

= - (6 . 7)

= - 42

Att. Makaveli1996