请问一下
1 5 2
--- - (- --- ) + --- 这道题怎么写
3 6 3
--- - (- --- ) + ---
1 2 5
= -- + - -- + ----
3 3 6
5
=1 + ---
6
=1 ---
1/3-(-5/6)+2/3
=1/3+5/6+2/3
=11/6(=1又5/6)