Question

Rút gọn các phân số sau:

a.\(\frac{121212}{131313}\)

b.\(\frac{2^3.3^4}{2^2.3^2.5}\)

Answer 1

a)\(\frac{121212}{131313}=\frac{121212:10101}{131313:10101}=\frac{12}{13}\)

b)\(\frac{2^3\cdot3^4}{2^2\cdot3^2\cdot5}=\frac{2^2\cdot3^2\cdot3^2.2}{2^2\cdot3^2\cdot5}=\frac{3^2\cdot2}{5}=\frac{9\cdot2}{5}=\frac{18}{5}\)

Answer 2

a) 121212/131313 = 121212 : 1010/131313 : 1010 = 12/13.

Answer 3

a)\(\frac{121212}{131313}=\frac{121212:10101}{131313:10101}=\frac{12}{13}\)

b)\(\frac{2^3\cdot3^4}{2^2\cdot3^2\cdot5}=\frac{2^2\cdot3^2\cdot3^2.2}{2^2\cdot3^2\cdot5}=\frac{3^2\cdot2}{5}=\frac{9\cdot2}{5}=\frac{18}{5}\)

Answer 4

a) 12/13

b) 18/5

Answer 5

a.\(\frac{121212}{131313}=\frac{121212:10101}{131313:10101}=\frac{12}{13}\)

b.\(\frac{2^3.3^4}{2^2.3^2.5}=\frac{2^2.2.3^2.3^2}{2^2.3^2.5}\)=\(\frac{2.3^2}{5}=\frac{18}{5}\)

Answer 6

a) 12/13

b) 18/5