Question

Gente por favor pra hoje ?

Answer 1

→ Cálculo :

A) ( - 650 ) - ( + 300 )

-650 - 300

-950

B) ( - 850 ) - ( - 850 )

-850 + 850

0

C) ( - 10 ) + ( + 3 ) + ( + 9 )

-10 + 3 + 9

-10 + 12

2

D) ( - 20 ) + ( + 3 ) + ( - 7 )

-20 + 3 - 7

-27 + 3

-24