Confusing math problem?

Question

ok the problem is: the sum of the two numbers is 58 and the difference is 16 what are the two numbers? so I guess the problem looks like this:

x + y = 58

x - y = 16

what are the numbers?! I'm so confused.

Answer 1

 x + y = 58 ----------------- (i)

 x - y = 16 ----------------(ii)

now, change the sings of 2nd equation, and add both equations

you will get

2y = 42, 

y = 42/2

y = 21, now put the value of  (y) in equation one you will get x value