Question

rút gọn phân số?
\(\dfrac{15}{120}\)                                      \(\dfrac{64}{720}\)
 

\(\dfrac{5}{25}\)                                              \(\dfrac{36}{48}\)

Answer 1

\(\dfrac{15}{120}=\dfrac{15:15}{120:15}=\dfrac{1}{8}\\ \dfrac{64}{720}=\dfrac{64:16}{720:16}=\dfrac{4}{45}\\ \dfrac{5}{25}=\dfrac{5:5}{25:5}=\dfrac{1}{5}\\ \dfrac{36}{48}=\dfrac{36:12}{48:12}=\dfrac{3}{4}\)

Answer 2

\(\dfrac{15}{120}=\dfrac{1}{8}\)

\(\dfrac{64}{720}=\dfrac{4}{45}\)

\(\dfrac{5}{25}=\dfrac{1}{5}\)

\(\dfrac{36}{48}=\dfrac{3}{4}\)

Answer 3

\(\dfrac{15}{20}=\dfrac{3}{4}\);\(\dfrac{64}{720}=\dfrac{4}{45};\dfrac{5}{25}=\dfrac{1}{5};\dfrac{36}{48}=\dfrac{3}{4}\)

 

Answer 4

\(\dfrac{15}{120}=\dfrac{15:15}{120:15}=\dfrac{1}{8}\)

\(\dfrac{64}{720}=\dfrac{64:16}{720:16}=\dfrac{4}{45}\)

\(\dfrac{5}{25}=\dfrac{5:5}{25:5}=\dfrac{1}{5}\)

\(\dfrac{36}{48}=\dfrac{36:12}{48:12}=\dfrac{3}{4}\)

Answer 5

\(\dfrac{15}{120}=\dfrac{1}{8}\)                                     \(\dfrac{64}{720}=\dfrac{4}{45}\)


\(\dfrac{5}{25}=\dfrac{1}{5}\)                                       \(\dfrac{36}{48}=\dfrac{3}{4}\)