1.二元一次方乘组{3X+2Y=M+3 2X-Y=2M-1的解互为相反数,求M的值.2.已知{X=1 Y=-2 {X=2 Y=0都是AX-BY=1的解,求A,B的值.3.解方程:(1){2X+3Y=-1 4X-9Y=8(2){4X-3Y=15 3X+2Y=7(3){2分之X+Y+3分之X-Y=6 4(X+Y)-5(X-Y)
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![1.二元一次方乘组{3X+2Y=M+3 2X-Y=2M-1的解互为相反数,求M的值.2.已知{X=1 Y=-2 {X=2 Y=0都是AX-BY=1的解,求A,B的值.3.解方程:(1){2X+3Y=-1 4X-9Y=8(2){4X-3Y=15 3X+2Y=7(3){2分之X+Y+3分之X-Y=6 4(X+Y)-5(X-Y)](/uploads/image/z/6849016-16-6.jpg?t=1.%E4%BA%8C%E5%85%83%E4%B8%80%E6%AC%A1%E6%96%B9%E4%B9%98%E7%BB%84%7B3X%2B2Y%3DM%2B3+2X-Y%3D2M-1%E7%9A%84%E8%A7%A3%E4%BA%92%E4%B8%BA%E7%9B%B8%E5%8F%8D%E6%95%B0%2C%E6%B1%82M%E7%9A%84%E5%80%BC.2.%E5%B7%B2%E7%9F%A5%7BX%3D1+Y%3D-2+%7BX%3D2+Y%3D0%E9%83%BD%E6%98%AFAX-BY%3D1%E7%9A%84%E8%A7%A3%2C%E6%B1%82A%2CB%E7%9A%84%E5%80%BC.3.%E8%A7%A3%E6%96%B9%E7%A8%8B%EF%BC%9A%EF%BC%881%EF%BC%89%7B2X%2B3Y%3D-1+4X-9Y%3D8%EF%BC%882%EF%BC%89%7B4X-3Y%3D15+3X%2B2Y%3D7%EF%BC%883%EF%BC%89%7B2%E5%88%86%E4%B9%8BX%2BY%2B3%E5%88%86%E4%B9%8BX-Y%3D6+4%EF%BC%88X%2BY%EF%BC%89-5%EF%BC%88X-Y%EF%BC%89)
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