Question

[thủy dương]

Rút gọn phân số:

15/35; 24/27; 17/50; 15/45; 99/121

Answer 1

[YangSu]

\(\dfrac{15}{35}=\dfrac{15:5}{35:5}=\dfrac{3}{7}\)

\(\dfrac{24}{27}=\dfrac{24:3}{27:3}=\dfrac{8}{9}\)

\(\dfrac{17}{50}\) ( phân số dã tối giản )

\(\dfrac{15}{45}=\dfrac{15:3}{45:3}=\dfrac{5}{15}=\dfrac{5:5}{15:5}=\dfrac{1}{3}\)

\(\dfrac{99}{121}=\dfrac{99:11}{121:11}=\dfrac{9}{11}\)

Answer 2

[Ng KimAnhh]

`24/27` chưa được rút gọn nha:'>

\(\dfrac{24}{27}=\dfrac{24:3}{27:3}=\dfrac{8}{9}\)