Question

Cara menyelesaikan soal 2x-3y=11
2x+3y=5

Answer 1

Dengan eliminasi:
2x - 3y = 11
2x + 3y = 5
__________ _
- 6y = 6
   y = - 1
   x = 4
HP: {(4,-1)}

Answer 2

2x-3y = 11
2x+3y = 5
---------------- _
     -6y = 6
        y = -1
2x-3y = 11
2x- 3(-1) = 11
2x+3 = 11
     2x = 11-3
     2x = 8
       x = 8/2 = 4