急求.初二数学解答题:(1/3)²÷{立方根-8/27-[2/15×根号25/9+(-1/2)³÷3/20]}

问题描述:

急求.初二数学解答题:(1/3)²÷{立方根-8/27-[2/15×根号25/9+(-1/2)³÷3/20]}
RT.急求,要过程

原式=1/9/(-2/3-(2/15*5/3-1/8*20/3))
=1/9/(-2/3-(2/9-5/6))
=1/9/-1/18
=-2