Since she has enough stuffing to make 50 bears, she can make 50 or less bears, in addition, since she only creates boy and girl bears, boy bears+girl bears =x+y, which is equal to or less than 50. We can write that as x+y≤50. For examples, we can have 1 girl bear and one boy bear, 2 girl bears and 2 boy bears, and 3 boy bears and 3 girl bears
