tentukan himpuan penyelesaian dari 4x + 2y = 12 dan 6x - y = 4

6x - y = 4
6x - 4 = y

4x + 2y = 12
4x + 2(6x - 4) = 12
4x + 12x - 8 = 12
16x = 20
x = 20/16
x = 1 4/16

4x + 2y = 12
4(20/16) + 2y = 12
5 + 2y = 12
2y = 7
y = 3 1/2

HP = {3 1/2 , 1 4/16}