Two numbers have a sum of 71 and a difference of 37 ( me, my teacher hates me)

The right answer for the question that is being asked and shown above is that:

Two numbers have a sum of 71 and a difference of 37
x + y = 71
x - y = 37

So in order to get the two numbers, here it is:
x + y = 71
x - y = 37

2x = 108
x = 54
y = 71 - 54
y = 17

So the two numbers are 54 and 17