A =(2.3.5+4.9.25+6.9.35+10.21.40) : (2.3.7+4.9.35+6.9.49+10.21.56) A bằng ?

0 bình luận về “A =(2.3.5+4.9.25+6.9.35+10.21.40) : (2.3.7+4.9.35+6.9.49+10.21.56) A bằng ?”

1. `A=(2.3.5+4.9.25+6.9.35+10.21.40):(2.3.7+4.9.35+6.9.49+10.21.56)`

   `⇒A=(2.3.5+4.9.5.5+6.9.7.5+10.21.8.5):(2.3.7+4.9.5.7+6.9.7.7+10.21.8.7)`

   `⇒A=[5.(2.3+4.9.5+6.9.7+10.21.8)]:[7.(2.3+4.9.5+6.9.7+10.21.8)]`

   `⇒A=5:7`

   `⇒A=5/7`

   Trả lời