数学二元一次方1.{X+2Y=9 3X-2Y=-12.{5X+2Y=25 3X+4Y=153.{2X+5Y=8 3X+2Y=54.{2X+3Y=6 3X-2Y=-25.{3U+2T=7 6U-2T=116.{2A+B=3 3A+B=47.{2X-5Y=-3 -4X+Y=-38.{2分之1X-2分之3Y=-1 2X+Y=3
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![数学二元一次方1.{X+2Y=9 3X-2Y=-12.{5X+2Y=25 3X+4Y=153.{2X+5Y=8 3X+2Y=54.{2X+3Y=6 3X-2Y=-25.{3U+2T=7 6U-2T=116.{2A+B=3 3A+B=47.{2X-5Y=-3 -4X+Y=-38.{2分之1X-2分之3Y=-1 2X+Y=3](/uploads/image/z/3805666-34-6.jpg?t=%E6%95%B0%E5%AD%A6%E4%BA%8C%E5%85%83%E4%B8%80%E6%AC%A1%E6%96%B91.%EF%BD%9BX%2B2Y%3D9+3X-2Y%3D-12.%EF%BD%9B5X%2B2Y%3D25+3X%2B4Y%3D153.%EF%BD%9B2X%2B5Y%3D8+3X%2B2Y%3D54.%EF%BD%9B2X%2B3Y%3D6+3X-2Y%3D-25.%EF%BD%9B3U%2B2T%3D7+6U-2T%3D116.%EF%BD%9B2A%2BB%3D3+3A%2BB%3D47.%EF%BD%9B2X-5Y%3D-3+-4X%2BY%3D-38.%EF%BD%9B2%E5%88%86%E4%B9%8B1X-2%E5%88%86%E4%B9%8B3Y%3D-1+2X%2BY%3D3)
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