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semoga bermanfaat
3x + 4y = 23 | ×2
20x + 8y = 60
6x + 8y = 46
______________ -
14x = 14
X = 1
Subtitusinya pilih salah satu
5x + 2y = 15
5 × 1 + 2y = 15
5 + 2y = 15
2y = 15 - 5
2y = 10
Y = 10/2
Y = 2
Maaf kalau salah