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x-2y=5 (semua dikali 2)
eliminasi:
2x+3y=3
2x-4y=10
----------------(dikurang agar ada variabel yang hilang)
7y = -7
y= -1
2x+3y=3 (semua dikali 2)
x-2y=5 (semua dikali 3)
eliminasi:
4x+6y=6
3x-6y=15
----------------(ditambah agar ada variabel yang hilang)
7x = 21
x=3