Question

How many more people want to move to the United States than to Canada and Great Britain combined?

Answer 1

This can be found out by comparing the number of people who want to move to the US, Canada and Great Britain;

Let's say the number of people who want to move to the US = x

Let's say the number of people who want to move to Canada = y

Let's say the number of people who want to move to Great Britain = z;

Then, the number of people who want to move to the US would be more than the number of peopel who want to move to Canada and Great Britain by = x - (y+z) = x-y-z ;