Question

If 49x – 57y = 172 ; 57x – 49y = 252.
Find the value of x + y and x-y ?

Answer 1

Answer:

x+y= 1;

x-y= 4

Step-by-step explanation:

please refer the photo for explanation

Answer 2

here in the first pic I find the value of x and y

in the second pic I find the value of x + y and x - y .