Question

3
4.
If 19x - 17y = 55 and 17x - 19y = 53, find (x + y).
ge
10​

Answer 1

Answer:

1

Step-by-step explanation:

19x - 17y = 55   ...(1)    17x - 19y = 53   ...(2)

  Subtract (2) from (1):

19x - 17y = 55

17x - 19y = 53

-     +       = -  

2x + 2y  = 2  

  ⇒ 2x + 2y = 2

  ⇒ 2(x + y) = 2

  ⇒ x + y = 2/2  

  ⇒ x + y = 1