53又1/3÷1又2/3-42又2/3×3/5+4又1/3×0.6

问题描述:

53又1/3÷1又2/3-42又2/3×3/5+4又1/3×0.6
最好巧算!

53又1/3÷1又2/3-42又2/3×3/5+4又1/3×0.6
=53又1/3×3/5-42又2/3×3/5+4又1/3×3/5
=(53又1/3-42又2/3+4又1/3)×3/5
=15×3/5
=9