简便计算:(5/6-2/15)*30
问题描述：
简便计算:(5/6-2/15)*30
答
原式=5/6*30+2/15*30=25+4=29
答
(5/6-2/15)*30
=5/6*30-2/15*30
=5*5-2*2
=21
答
(5/6-2/15)×30
=5/6 × 30 - 2/15 × 30
=25-4
=21
答
简便计算:(5/6-2/15)*30
(5/6-2/15)*30
=5/6*30-2/15*30
=25-4
=21