Not sure if you want an equivalent fraction for 2/3 or 2 and 3 so I will give both!
2 can be any fraction where the numerator is 2x larger than the denominator.
Example, 2/1, 4/2, 6/3, 8,4 etc.
3 can be any fraction where the numerator is 3x larger than the denominator.
Example, 3/1, 6/2, 9/3, 12/4 etc.
An equal fraction to the fraction 2/3 would be anything that has a numerator is 2/3x larger than the denominator.
Example, 4/6, 6/9, 8/12 etc.
Hope this helps. :)