x=3是方程2[(x/3+1)+m(x-1)/4]=3的解
2[(3/3+1)+m(3-1)/4]=3
2[2+m/2]=3
4+m=3
m=-1
且n满足关系式m+2n的绝对值=1
|m+2n|=1
|-1+2n|=1
-1+2n=1 n=1
或-1+2n=-1 n=0
m+n=-1+1=0
或m+n=-1+0=-14+m=3前面的二呢2[(3/3+1)+m(3-1)/4]=32[2+(m/2)]=32*2+2*(m/2)=34+m=3