Question

已知1小于x小于5,化简x-5分之x-5的绝对值+x-1分之x-1的绝对值

Answer 1

1≤x≤5
则x-5≤0,x-1≥0
│x-5│/(x-5)+│x-1│/(x-1)
=-(x-5)/(x-5)+(x-1)/(x-1)
=-1+1
=0