Question 746310
2x + 3y = 24.....1
2x - 3y = 12.....2

Add 1 to 2

4x      = 36
 x      = 9

Substitute x = 9
into 1

2(9) + 3y = 24
 18  + 3y = 24
       3y = 24 - 18
       3y = 6
        y = 2

Therefore value of xy = 9 x 2 = 18