himpunan penyelesaian dari 2x-y+2=11, y+z=11, 2x-y=3 #pakeCara

2x - y + 2z = 11
2x - y = 3
--------------- -
2z = 8
z = 4

y + z = 11
y + 4 = 11
y = 7

2x - y + 2z = 11
2x - 7 + 8 = 11
2x = 10
x = 5

hp{5, 7, 4}