Answer:
1/6
Explanation:
1/2 of 12 is 6 so she has 6 yellow stickers
1/3 of 12 is 4 so she has 4 green stickers
that means she only has 2 stickers left because 6+4=10
2/12 of her stickers are blue but you can simplify it to 1/6 by dividing the numerator and denominator by 2