It works out that: x = 3 and y = 2
The LCM of 2x5y and 4x3y2 is 4x5x3y2 = 60xy2.
It is any fraction where the denominator is a multiple of non-negative integer powers of 2 and 5. In other words, a fraction with a denominator of the form 2x5y where x and y are non-negative integers.