Question

Quy đồng mẫu số các phân sau:

 

11/12 và 7/48                            61/200 và 9/50.                    1/3;2/15 và 4/45

Answer 1

\(\dfrac{11}{12}=\dfrac{11.4}{12.4}=\dfrac{44}{48}\) và \(\dfrac{7}{48}\)

\(\dfrac{61}{200};\dfrac{9}{50}=\dfrac{9.4}{50.4}=\dfrac{36}{200}\)

\(\dfrac{1}{3}=\dfrac{1.15}{3.15}=\dfrac{15}{45}\); \(\dfrac{2}{15}=\dfrac{2.3}{15.3}=\dfrac{6}{45}\) và 4/45

 

Answer 2

`a,MSC:48`

`11/12 = (11xx4)/(12xx4)=44/48`

`7/48` giữ nguyên

`b, MSC:200`

`61/200` giữ nguyên

`9/50=(9xx4)/(50xx4)=36/200`

`c,MSC:45`

`1/3=(1xx15)/(3xx15)=15/45`

`2/15=(2xx3)/(15xx3)=6/45`

`4/45` giữ nguyên

Answer 3

\(\dfrac{11}{12}=\dfrac{11\times4}{12\times4}=\dfrac{44}{48}\) và \(\dfrac{7}{48}\)

\(\dfrac{61}{200}\) và \(\dfrac{9}{50}=\dfrac{9\times4}{50\times4}=\dfrac{36}{200}\)

\(\dfrac{1}{3}=\dfrac{1\times15}{3\times15}=\dfrac{15}{45}\);\(\dfrac{2}{15}=\dfrac{2\times3}{15\times3}=\dfrac{6}{45}\) và \(\dfrac{4}{45}\)