帮我解一元一次方程组,急用~1.3x+5y=15,2x-3y=-4.2.3分之x+4分之x=1,2x-3y=53.x-2y-3=05x+4y+8=04.x-2y+3z=03x+2y+5z=122x-4y-z=-75.2x-3y+4z=12x-y+3z=44x+y-3z=-26.x+2y+3z=153分之x+4z=4分之y-3z=3

来源:学生作业帮助网 编辑:作业帮 时间:2024/10/13 02:23:53
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