Question

Resolva as seguintes expressões:

A) -5/8+1/4:(-0,2)+1/2

B) 1/4-(1/4 - 2/3):(-1/8)-[1/5:1/4+4/9]

Preciso Urgente! Por favor!

Answer 1

Boa tarde

0.2 = 1/5

A)

-5/8 + 1/4*(-1/5) + 1/2 

 -5/8 - 1/20 + 1/2

mmc = 40

-25/40 - 2/40 + 20/40 = -7/40 

B)

1/4 - (1/4 - 2/3)/(-1/8) - [1/5*1/4 + 4/9]
1/4 - (-5/12)/(-1/8) - 1/20 - 4/9 

1/4 - (5/12)*(8/1) - 1/20 - 4/9 
1/4 - 10/3 - 1/20 - 4/9 

mmc = 180 

45/180 - 600/180 - 9/180 - 80/180 = -644/180 = -161/45