Question

If 173x + 197y = 149 and 197x + 173y = 221, then (x, y) =
(A) (3,-2) (B) (2, 1)
(C) (1, -2)
(D) (2, -1)​

Answer 1

d) (2,-1)

Step-by-step explanation:

easy method is using trial and error substitute the value of x and y in the equation, and find which satisfy the equation