Fokus Nomor 20 .Tolong jawaban dan caranya

x/2 - y/3 = 1 ==> 3x - 2y = 6
x/2 + y/3 = 7 ==> 3x + 2y = 42
          ------------- +
                  6x      = 48
                   x = 48/6 = 8

3(8) - 2y = 6
24 - 2y = 6
24 - 6 = 2y
18 = 2y
 y = 18/2 = 9
berarti jawabanya D) (8,9)