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3x + 4y = 12. x 2( biar x nya sama)
6x - 3y = 14
6x + 8y = 24
6x - 3y = 14 (lalu eliminasi) dikurangi
11y = 10
y = 10/11
lalu subtitusi
3x + 40/11 = 12
3x = 132/11 - 40/11
3x = 92/11
x = 92/33
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