以下要用代入法:1.2x-3y=5,2x-2y=-2 24x-2y=39,3x-4y=18 1/3X+3y=19,1/3y+3x=11 2x-3y=8 ,3x+7y=0.5以下要用代入法:2x-3y=5,2x-2y=-2 4x-2y=39,3x-4y=181/3X+3y=19,1/3y+3x=112x-3y=8 ,3x+7y=0.59x+8y=-2,4x+5y=-11以上的题,能回答多少都
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![以下要用代入法:1.2x-3y=5,2x-2y=-2 24x-2y=39,3x-4y=18 1/3X+3y=19,1/3y+3x=11 2x-3y=8 ,3x+7y=0.5以下要用代入法:2x-3y=5,2x-2y=-2 4x-2y=39,3x-4y=181/3X+3y=19,1/3y+3x=112x-3y=8 ,3x+7y=0.59x+8y=-2,4x+5y=-11以上的题,能回答多少都](/uploads/image/z/582101-53-1.jpg?t=%E4%BB%A5%E4%B8%8B%E8%A6%81%E7%94%A8%E4%BB%A3%E5%85%A5%E6%B3%95%EF%BC%9A1.2x-3y%3D5%2C2x-2y%3D-2+24x-2y%3D39%2C3x-4y%3D18+1%2F3X%2B3y%3D19%2C1%2F3y%2B3x%3D11+2x-3y%3D8+%2C3x%2B7y%3D0.5%E4%BB%A5%E4%B8%8B%E8%A6%81%E7%94%A8%E4%BB%A3%E5%85%A5%E6%B3%95%EF%BC%9A2x-3y%3D5%2C2x-2y%3D-2+4x-2y%3D39%2C3x-4y%3D181%2F3X%2B3y%3D19%2C1%2F3y%2B3x%3D112x-3y%3D8+%2C3x%2B7y%3D0.59x%2B8y%3D-2%2C4x%2B5y%3D-11%E4%BB%A5%E4%B8%8A%E7%9A%84%E9%A2%98%2C%E8%83%BD%E5%9B%9E%E7%AD%94%E5%A4%9A%E5%B0%91%E9%83%BD)
以下要用代入法:1.2x-3y=5,2x-2y=-2 24x-2y=39,3x-4y=18 1/3X+3y=19,1/3y+3x=11 2x-3y=8 ,3x+7y=0.5以下要用代入法:2x-3y=5,2x-2y=-2 4x-2y=39,3x-4y=181/3X+3y=19,1/3y+3x=112x-3y=8 ,3x+7y=0.59x+8y=-2,4x+5y=-11以上的题,能回答多少都
以下要用代入法:1.2x-3y=5,2x-2y=-2 24x-2y=39,3x-4y=18 1/3X+3y=19,1/3y+3x=11 2x-3y=8 ,3x+7y=0.5
以下要用代入法:2x-3y=5,2x-2y=-2
4x-2y=39,3x-4y=18
1/3X+3y=19,1/3y+3x=11
2x-3y=8 ,3x+7y=0.5
9x+8y=-2,4x+5y=-11
以上的题,能回答多少都行!
14:00 需要呀
以下要用代入法:1.2x-3y=5,2x-2y=-2 24x-2y=39,3x-4y=18 1/3X+3y=19,1/3y+3x=11 2x-3y=8 ,3x+7y=0.5以下要用代入法:2x-3y=5,2x-2y=-2 4x-2y=39,3x-4y=181/3X+3y=19,1/3y+3x=112x-3y=8 ,3x+7y=0.59x+8y=-2,4x+5y=-11以上的题,能回答多少都
1、y=x+1,代入得2x-3(x+1)=5,2x-3x-3=5,x=-8,y=-7
以此类推,都一样
用代入法解方程组2x+3y=12,3x-4y=17代入法代入法代入法!
以下要用代入法:1.2x-3y=5,2x-2y=-2 24x-2y=39,3x-4y=18 1/3X+3y=19,1/3y+3x=11 2x-3y=8 ,3x+7y=0.5以下要用代入法:2x-3y=5,2x-2y=-2 4x-2y=39,3x-4y=181/3X+3y=19,1/3y+3x=112x-3y=8 ,3x+7y=0.59x+8y=-2,4x+5y=-11以上的题,能回答多少都
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