Question

if 56x+65y=47;65x+56y=74 then find the value of (x-y)​

Answer 1

Answer:

x= 2 and y= -1

Step-by-step explanation:

adding 56x+65y=47 equation - 1

            65x + 56y=74 equation  - 2

we get 121x+121y=121

     i.e   x + y = 1 equation 3

subtracting we get - x + y= - 3  equation 4

solving 3 and 4

we get, x = 2 and y = -1