解：2x+3y=m+1 (1)3x-y=2m-3 (2)x+y=0 (3)(1)-(3)x32x+3y-3x-3y=m+1x=-m-1(2)+(3)3x-y+x+y=2m-34x=2m-3x=(2m-3)/4-m-1=(2m-3)/4-4m-4=2m-3-6m=1m=-1/6希望你能看懂，祝你学习进步
m=-1/6
