2.3x-5y=-23 dan 4x+2y=4
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1.3x+4y=-6 dan 2x-3y=13
1. 3x + 4y = -6. ×3 9x + 12y = -18
2x – 3y = 13. ×4 8x – 12y = 52
x = 34
2x + 4y = -6
2 × 34 + 4y = -6
68 + 4y = -6
4y = – 6 – 68
4y = – 74
y = – 74 : 4
y = – 18,5