Question

2/3 : ( -12) =
27/98 · 21/81=
1/6 + 3/8=
2 : 6 = ( ca fractie)
6-54/24=

Answer 1

2/3:(-12) = 2/3×(-1/12) = -2/36 = -1/18 

27/98×21/81 = 9/126=1/14 

1/6+3/8 amplificam pe 1/6 cu 4 si pe 3/8 cu 3 
4/24+9/24 = 13/24 

2:6=0,(3) = 3/9 = 1/3

6-54/24 = 6-9/4 amplificam pe 6 cu 4 
24/4-9/4=15/4

Answer 2

A)

2/3 x (-1/12)= -1/18

b) = amplificam cu 27

=> 1/98 x 21/3 amplificam cu 7

=> 1/14 x 3/3 =

=> 1/14 x 1= 1/14

C) numitor comun = (24)

=> 4/24 + 9/24 = 13 /24

D) = 2/6 = 1/3

E)
144/24 - 54/24 = 90/24 = 15/4