Question

5x + 7y = 17, 7x + 5y = 19, then the value of x - y :​

Answer 1

Answer:

(x-y) = 1

Step-by-step explanation:

By substracting both the eqⁿ

5x + 7y = 17

7x + 5y = 19

- - -

____________

-2x + 2y = -2

-2 (x-y) = -2

(x-y) = -2/-2

(x-y) = 1 Ans.