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X- 2y = &3 x + 4 Y =20 |
Answer» x - 2y = 3x + 4y = 20x - 2y = 20x = 20 - 2y3x + 4y = 203(20 - 2y) + 4y = 2060 - 6y + 4y = 2060 - 2y = 202y = 40y = 20x = 20 - 2yx = 20 - 40x = -20 |
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