依题意得
2-x≥0，
∴x≤2．
故答案为：x≤2．
已知集合A={x|x2-5x+6=0}，B={x|（m-1）x-1=0}，且A∩B=B，求由实数m为元素所构成的集合M．
-_______ is it?
-It's six thirty. [ ]
A. When
B. What colour
C. What time
