二元一次方程组专项练习题80.docx

二元一次方程组专项练习题80.docx

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二元一次方程组专项练习题二元一次方程组专项练习题804a3b134x6y139a2b32x4y18x7y808m4b158yx80-6m9b108a4b154x9y65ab95x9y68x7y280.3x0.8y2.1y4x280.1x0.3y0.7ab65x2y183a8b145x5y125x9y1876m6b242y9x187-5m4b238ab52x6y89a5b29x4y35x9y1800.8x0.5y2y4x1800.9x0.2y0.95a6b138x9y86a3b183x4y87x3y103m3b62y9x10-4m8b98a2b83xy-56a8b109x2y-42x5y1030.2x0.6y46y6x1030.2x0.7y3.48a7b97x4y149a4b44x6y56xy1114m2b86y9x111-8mb22a7b4x6y109a8b82x9y-9x2y1100.6x0.4y0.83y5x1100.2x0.9y0.35a5b116x8y10a9b17x2y123x3y89m2b32y7x89-1m9b262a6b113x7y-37a2b98x4y15x5y210.5x0.9y0.22y2x210.8x0.3y1.57a9b106x7y6a9b113x2y13x4y84m2b21y2x84-10m3b08a2b149x2y-74ab189x6y-28x4y10.2x0.2y3.59y7x10.5x0.2y1.34a2b84x4y62a2b19x3y69x7y87m4b12y2x8-2mb265a9b93x6y-53ab117x5y77xy470.6x0.2y1.19y3x470.4x0.7y2.62a3b183x5y172a7b64x9y128xy638m2b194y4x63-3m7b108a6b68x3y-93a2b17x5y-75x5y310.3x0.1y3.52y9x310.5x0.5y1.73a5b122x6y1a3b127x4y86x2y152mb56y4x15-10mb66a7b169x2y-18a3b98x9y64x2y1160.4x0.2y0.5y5x1160.2x0.4y0.64ab2x2y119a5b27x8y175x7y47mb22y8x4-10m2b82a6b36x8y34a2b109x2y-55x3y100.3x0.2y0.52y4x100.4x0.6y0.63ab199xy7a4b118x4y116x4y684mb152y5x68-3m5b45a5b97x2y-69a6b156x3y66xy1430.2x0.3y3.76y7x1430.5x0.9y0.34a9b135x9y125a5b57x9y125x6y429m9b0y4x42-3m4b249ab98x9y-15a4b45x3y-68x6y50.8x0.5y2.36yx50.1x0.3y3.54a7b54x9y35a5b93x5y188x8y452m8b305y5x45-4m9b30ab203x8y-65a2b39x6y85x9y770.1x0.1y0.83y4x770.6x0.2y1.13a4b89x5y175a6b15x8y129x3y175m4b8y9x17-3mb8a3b207x9y4a2b38x5y-18x6y470.9x0.9y1.72y9x470.6x0.5y32a3b119x4y24a7b43x4y193x8y714mb259y4x71-9m2b226a4b62x4y95a4b79x7y36x4y100.7x0.8y2.22y6x100.3x0.1y3.2