Question

3 ) Calcule e simplifique as respostas sempre que possível:

a ) 2 - 1/9 + 1/3 =

b ) 5 - 8/4 : 2/3 + 1/2 =

c ) 4/5 - ¼ . 5 =

d ) 1/4 .4/3 : 5/3 . 2/4 = ​

Answer 1

Resposta:

a)

9,3|3

3,1|3

1,1

MMC=3.3=9

18/9-1/9+3/9=

18-1+3/9=

20/9

b) 5-8/4×3/2+1/2=

5-24/8+1/2=

5-3+1/2=

10/2-6/2+1/2=

10-6+1/2=

5/2

c)4/5-5/4=

16/20-25/20=

16-25/20=

-9/20

d)4/12:5/3.2/4=

4/12.3/5.2/4=

12/60.2/4=

24/240=1/10