Question

[Phượng Phạm]

Quy đồng mẫu các phân số

b) \(\dfrac{17}{12}\) ; \(\dfrac{31}{18}\) ; \(\dfrac{8}{15}\)

c) \(\dfrac{7}{15}\) ; \(\dfrac{8}{25}\) ; \(\dfrac{11}{75}\)

d) \(\dfrac{8}{45}\) ; \(\dfrac{13}{180}\) ; \(\dfrac{4}{30}\)

e)  \(\dfrac{51}{136}\) ; \(\dfrac{60}{108}\) ; \(\dfrac{26}{156}\)

giải nhanh giúp t vs ccau ơi, nhanh + chi tiết = tick

Answer 1

[GV Nguyễn Trần Thành Đạt]

\(a,MSC:180\\ \dfrac{17}{12}=\dfrac{17.15}{12.15}=\dfrac{255}{180};\dfrac{31}{18}=\dfrac{31.10}{18.10}=\dfrac{310}{180};\dfrac{8}{15}=\dfrac{8.12}{15.12}=\dfrac{96}{180}\\ b,MSC:75\\ \dfrac{7}{15}=\dfrac{7.5}{15.5}=\dfrac{35}{75};\dfrac{8}{25}=\dfrac{8.3}{25.3}=\dfrac{24}{75};\dfrac{11}{75}=\dfrac{11}{75}\)