`a= 8/11+5/7-3/11+2/7+6/11` `c= 2/3.5+2/5.7+…+2/37.39`

2 bình luận về “`a= 8/11+5/7-3/11+2/7+6/11` `c= 2/3.5+2/5.7+…+2/37.39`”

1. a=8/11+5/7-3/11+2/7+6/11

   a=(8/11-3/11+6/11)+(5/7+2/7)

   a=1+1=2

   $\\$

   c=2/(3.5)+2/(5.7)+…+2/(37.39)

   c=1/3-1/5+1/5-1/7+…+1/37-1/39

   c=1/3-1/39

   c=4/13

   $\\$

            $\textit{#YouAreMyWorld}$ღ

   Trả lời
2. Giải đáp:

   a=8/11+5/7-3/11+2/7+6/11

   a=(8/11-3/11+6/11)+(5/7+2/7)

   a=11/11+7/7

   a=1+1

   a=2

   c=2/(3.5)+2/(5.7)+…+2/(37.39)

   c=1/3-1/5+1/5-1/7+…+1/37-1/39

   c=1/3-1/39

   c=13/39-1/39

   c=12/39

   Trả lời