(21/16+0.875)除以7 简便运算
问题描述:
(21/16+0.875)除以7 简便运算
答
(21/16+0.875)÷7
=(21/16+7/8)÷7
=(21/16+7/8)*1/7
=21/16*1/7+7/8*1/7
=3/16+1/8
=3/16+2/16
=5/16