=\(\left(\frac{5-3}{3.5}\right)+\left(\frac{8-5}{5.8}\right)+\left(\frac{19-8}{8.19}\right)+\left(\frac{32-19}{19.32}\right)+\left(\frac{57-32}{32.57}\right)+\left(\frac{87-57}{57.87}\right)\)
=\(\frac{1}{3}-\frac{1}{5}+\frac{1}{5}-\frac{1}{8}+\frac{1}{8}-\frac{1}{19}+\frac{1}{19}-\frac{1}{32}+\frac{1}{32}-\frac{1}{57}+\frac{1}{57}-\frac{1}{87}\)
=\(\frac{1}{3}-\frac{1}{87}\)
=\(\frac{28}{87}\)
Ai thấy đúng thì k cho mk nhé!
Đúng 0
Bình luận (0)
