Question

m=5/3.5+5/5.7+...+5/31.33

Answer 1

\(\frac{5}{3.5}\)+  \(\frac{5}{5.7}\)+   ..... + \(\frac{5}{31.33}\)

=  \(\frac{5}{2}\).  (  \(\frac{1}{3}\)_ \(\frac{1}{5}\)+  \(\frac{1}{5}\)_  \(\frac{1}{7}\)+.....+  \(\frac{1}{31}\)_ \(\frac{1}{33}\))

=   \(\frac{5}{2}\).   ( \(\frac{1}{3}\)_  \(\frac{1}{33}\))

=    \(\frac{5}{2}\).   \(\frac{30}{99}\)

=      \(\frac{50}{66}\)

Answer 2

bạn chua rút gọn đáp số đúng rồi