Describe how you find the GCF of 15x2y and 10x3y2?

I do the coefficients first. The GCF of 10 and 15 is 5.

I tackle the variables next. The GCF of x2y and x3y2 is x2y

I put it all together. The GCF of 15x2y and 10x3y2 is 5x2y.