Question

If 31x + 43y = 117 and 43x + 31y = 105, then the value of x – y is​

Answer 1

Answer:

-1

Step-by-step explanation:

31x + 43y = 117 _______ (1)

43x + 31y = 105________(2)

{1} - {2}

= 12x - 12y = -12

12(x-y) = -12

x-y = _1