Question

Himpunan persamaan linier
2x+3y=3
x-2y =5 adalah...

Answer 1

X-2y = 5 --> 2x-4y =10

2x-4y = 10
2x+3y = 3
_____________- 
     -7y = 7
         y = -1
2x + -3 = 3
2x = 6
x =3

HP {(3,-1)}

Answer 2

2x + 3y = 3
2x - 4y = 10
__________ - 
7y = - 7
 y = - 1
 x = 3

HP: {(3,5)}