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Verified answer
2x-3y = 72x+y = 3
_______-
-4y = 4
y = -1
2x-3y = 7
2x+y = 3
2x-3y = 7
6x+3y = 9
_______+
8x = 16
x = 2
HP = {2,-1}
2x + y = 3
(eliminasi x)
-4y = 4
y = 4/-4 = -1
(subtitusi ke salah 1 nya)
2x - 3y = 7
2x - 3(-1) = 7
2x + 3 = 7
2x = 7-3
x= 4/2 = 2