Question

Giúp mình bài này với:

Rút gọn phân số sau

A=\(\dfrac{121.75.130.169}{39.60.11.198}\)

Answer 1

\(=\dfrac{121}{11}\cdot\dfrac{75}{60}\cdot\dfrac{169}{39}\cdot\dfrac{130}{198}=11\cdot\dfrac{5}{4}\cdot\dfrac{13}{3}\cdot\dfrac{65}{99}\)

\(=\dfrac{11}{99}\cdot\dfrac{65}{12}\cdot65=\dfrac{4225}{108}\)

Answer 2

\(A=\dfrac{121.75.130.169}{39.60.11.198}\)

\(A=\dfrac{9075.130.169}{2340.11.198}\)

\(A=\dfrac{1179750.169}{25740.198}\)

\(A=\dfrac{199377750}{5096520}\)

\(A=\dfrac{4225}{108}\)