简便计算一条 【十五分之八-(五分之四-十分之三)】×十五分之十四

2025-12-18 06:03:58
推荐回答(1个)
回答1:

[ 8/15 - ( 4/5 - 3/10 ) ] X 14/15
= [ 16/30 - 24/30 + 9/30 ] X 14 / 15
= [ 25/30 - 24/30 ] X 14/15
= 1/30 X 14/15
= 7/225