Question

2x - 3y = 2 dan 3x = 10 + y --> eliminasi nys

Answer 1

2x - 3y = 2.........(1)
3x - y  = 10  -.....(2)
-x - 2y = -8.........dikalikan -1
x + 2y = 8
x = 8 - 2y.............(3)

Masukkan nilai persamaan 3 ke persamaan 1

2(8-2y) - 3y = 2
16 - 4y-3y = 2
16 - 7y     = 2
      16 - 2 = 7y
         14  = 7y
           y  = 14/7
           y = 2

x= 8 - 2y
  = 8 - 2*2
  = 8 - 4
 x= 4