解:2x+3y=m+3,(1)3x+2y=m.(2),(1)+(2),得,5x+5y=2m+3,5(x+y)=2m+3将x+y=8代入,得,40=2m+3,所以m=37/2
2x+3y=m+33x+2y=m两者相加得5x+5y=2m+3所以 x+y=(2m+3)/5=8所以 2m+3=40 m=37/2
