Question

hãy  rút gọn các phân số sau:

117/234, 90/126, 162162/345345.

Answer 1

`117/234=(117:117)/(234:117)=1/2`

`90/126=(90:18)/(126:18)=5/7`

`162162/345345=(162162:3003)/(345345:3003)=54/115`

Answer 2

\(\dfrac{117}{234}\)= \(\xrightarrow[234:117]{117:117}\) = \(\dfrac{1}{2}\)                                    \(\dfrac{162162}{345345}\) = \(\xrightarrow[345345:3003]{162162:3003}\) =\(\dfrac{54}{115}\)

\(\dfrac{90}{126}\)= \(\xrightarrow[126:18]{90:18}\) = \(\dfrac{5}{7}\)                                     

Answer 3

\(\dfrac{117}{234}=\dfrac{1}{2}\)

\(\dfrac{90}{126}=\dfrac{5}{7}\)

\(\dfrac{162162}{345345}=\dfrac{54}{115}\)