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Verified answer
Cara eliminasix + y = 6
x - y = 2
-------------(-)
2y = 4
y = 2
x + y = 6
x - y = 2
-------------(+)
2x = 8
x = 4
hp = {4,2}
dg cara subtitusi
x + y = 6
x = - y + 6
x - y = 2
( - y + 6) - y = 2
- 2y + 6 = 2
- 2y = 2 - 6
- 2y = - 4
y = 2
x = - y + 6
x = - 2 + 6
x = 4
hp = { 4,2}