Answer:
2/9
Step-by-step explanation:
convert thirds to ninths by multiplying top and bottom number in the fraction by the same multiplyer (3×3=9 so the top number has to be multiplied by 3 as well) so 1/3 = 3/9 so 2x brothers had 6/9 in total
then add 1/9 given to sister =7/9 given away
9/9 - 7/9 leaves 2/9
