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5x + 3y = kedua ruas dikalikan 2
10x + 6y = -7
Eliminasi
10x + 6y = -7 | ×2 | 20x + 12y = -14
4x - 7y = 16 | ×5 | 20x - 35y = 80 _
47y = -94
y = -2
Subtitusikan y=-2 pada salah satu persamaannya
4x - 7y = 16
4x - 7(-2) = 16
4x + 14 = 16
4x = 2
x =
Jadi himpunan penyelesaiannya {-2}
2) 3x - 10y = 6 | ×1 | 3x - 10y = 6
11x + 5y = 103 | ×2 | 22x + 10y = 206 +
25x = 212
x =
Subtitusikan x= pada salah satu persamaannya
3 × - 10y = 6
50 - 6 = 10y
44 = 10y
4 = y
Jadi himpunan penyelesaiannya {8, 4}