【4又2/3*(-5/14)+(-0.4)/(-4/25)】*1又1/5
问题描述:
【4又2/3*(-5/14)+(-0.4)/(-4/25)】*1又1/5
答
【4又2/3*(-5/14)+(-0.4)/(-4/25)】*1又1/5
=【-5/3+5/2】*1又1/5
=5/6×6/5
=1