(13/15-2/5除以4)除以46简便计算

问题描述:

(13/15-2/5除以4)除以46简便计算

(13/15-2/5 ÷4)÷46
=(13/15-1/10)÷46
=(26/30-3/30)×1/46
=23/30 ×1/46
=1/60