Question

If x+y=6 and 3x-y=4, find the value of x-y.

• A. -1
• B. 2
• C. 4

Answer 1

The correct option is A -1

Adding both the equations; we get:
$4x=10$
And, subtracting second equation from three times the first equation; we get:
$4y=14$
So:
$x=\frac{5}{2}$
$y=\frac{7}{2}$
therefore, x – y = (-1)