(1/7-1/9)×6.3+2/5简便计算帮帮忙
问题描述:
(1/7-1/9)×6.3+2/5简便计算帮帮忙
答
(1/7-1/9)x6.3+2/5=1/7x6.3-1/9x6.3+0.4=0.9-0.7+0.4=0.6
(1/7-1/9)×6.3+2/5简便计算帮帮忙
(1/7-1/9)x6.3+2/5=1/7x6.3-1/9x6.3+0.4=0.9-0.7+0.4=0.6