himpunan penyelsaian sistem persamaan linier 5x + 2y =4dan 2x-4y =16 a.2,3 b.2,-3 c.-2,3 d.-2,-3

5x+2y = 4 (× 4)
2x -4y = 16 (× 2)

20x + 8y = 16
4x - 8y =32
-------------------- +
24x =48
x = 48/24
x = 2

5x + 2y = 4
5.2 +2y= 4
10 + 2y = 4
2y = 4 - 10
2y = - 6
Y = -6/2
y = - 3
Jdi (b). 2, -3