Hiya! I'm gonna help ya!
Known: 2/3 of the cake was left, Elisa ate 1/3
What we need to know is how much cake is left
So!
We need to find the lcd,or the least common denominator.
Lcd of 2/3:2/3
Lcd of 1/3:1/3
Now, we need to to multiply.
2/3×1/3=2/9
More explanation below
2x1 is 2
3×3 is 9
so 2 over 9!
Answer:2/9
Brainliest?