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Pensil = x
Bolpoin = y
Maka,
2x +2y = 6000
3x +y = 5000 --------> y = 5000 -3x
2x +2y = 6000
2x +2(5000 -3x) = 6000
2x +10000 64x = 6000
2x -6x = 6000 -10000
-4x = -4000
x = -4000/-4
x = 1000
y = 5000 -3x
y = 5000 -3(1000)
y = 5000 -3000
y = 2000
Jadi, harga pensil = 1000 dan bolpoin = 2000.
Itu jawabannya.