Question

ajuda pfv é pra hj:((​

Answer 1

Resposta:

1-a) 9+[5-(8-4)+12-3]

9+[5-4+12-3]

9+[1+12-3]

9+[13-3]

9+10=19

1-b)52-(38+40)-(-17-6)

52-78-(-23)

-26-(-23)=3

2- 10 pontos

3- 8:2=4. 8:4=2. 8:8=1

32:2=16. 32:4=8. 32:8=4

128:2=64. 128:4=32. 128:8=16

512:2=256. 512:4=128. 512:8=64