解:∵x-2=y∴代入第二个式子,得mx+x-2=6,(m+1)x=8,即x=8/(m+1)为非负整数∴m+1是8的约数∴m+1=1,2,4,8m=0,1,3,7x=8,4,2,1y=6,2,0,-1∴x=8,4,2m=0,1,3
