Question

1- Resolva as expressões:
a) 8 +3 – ( 2 x 4 + 1 + 3 - 8)=
b) – 4 - 3 + ( -13 -28 )=

Answer 1

As imagens estão com a resposta

Answer 2

A) 8 + 3 - ( 2 × 4 + 1 + 3 - 8 )

8 + 3 - (8 + 1 + 3 - 8)

8 + 3 - 4

7

B) - 4 - 3 + ( - 13 - 28 )

-4 -3 +(-41)

-7 - 41

-48