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2x - y = 8 Kedua ruas di (x2)
3x + 2y = 12
4x - 2y = 16 +
7x = 28
x = 4
*2x - y = 8
2(4) - y = 8
8 - y = 8
-y = 0
y = 0
Jadi, x = 4 dan y = 0