Question

3x+5y=9 & 5x+3y=7 then find value of x-y. ​

Answer 1

Adding the two equations we get X + Y = 8

Subtracting, we get Y - X = 2

Hence X - Y = -2

Answer 2

Answer:

3x+5x=9

-5x+3x=7

-. -. =-

2x-2y=16

divide by 2

x-y =8