bài3

1. \(\frac{4}{3}\)= \(\frac{4x4}{3x4}\)=\(\frac{20}{12}\)

\(\frac{3}{4}\)=\(\frac{3x3}{4x3}\)=\(\frac{9}{12}\)

2.\(\frac{5}{4}\)=\(\frac{5x6}{4x6}\)=\(\frac{30}{24}\)

\(\frac{5}{6}\)=\(\frac{5x4}{6x4}\)=\(\frac{20}{24}\)

3.\(\frac{3}{8}\)=\(\frac{3x6}{8x6}\)=\(\frac{18}{48}\)

\(\frac{1}{6}\)=\(\frac{1x6}{6x8}\)=\(\frac{6}{48}\)

4.\(\frac{2}{5}\)=\(\frac{2x7}{5x7}\)=\(\frac{14}{35}\)

\(\frac{4}{7}\)=\(\frac{4x5}{7x5}\)=\(\frac{20}{35}\)

TL

Phân số là 3/45/4

HT

10/60 ; 30/60 ; 36/60

a)\(\frac{2}{3}=\frac{2\times20}{3\times20}=\frac{40}{60}\)

\(\frac{1}{4}=\frac{1\times15}{4\times15}=\frac{15}{60}\)

\(\frac{3}{5}=\frac{3\times12}{5\times12}=\frac{36}{60}\)

b)\(\frac{1}{6}=\frac{1\times55}{6\times55}=\frac{55}{330}\)

\(\frac{2}{5}=\frac{2\times66}{5\times66}=\frac{132}{330}\)

\(\frac{3}{11}=\frac{3\times30}{11\times30}=\frac{90}{330}\)

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kho

\(\frac{10}{60} , \frac{15}{60} , \frac{24}{60}\)

10/60;15/60;24/60 nha :>

help me

a: 1/3=20/60

1/4=15/60

4/5=48/60

b: 1/2=6/12

2/3=8/12

3/4=9/12

a: 1/54=1/54

5/6=45/54

b: 3/22=3/22

6/11=12/22

c: 1/2=6/12

2/3=8/12

3/4=9/12

a: 2/3=10/15

1/5=3/15

b: 3/4=6/8

5/8=5/8

c: 5/6=15/18

4/9=8/18

\(\dfrac{2}{3}=\dfrac{10}{15};\dfrac{1}{5}=\dfrac{3}{15}\)

\(\dfrac{3}{4}=\dfrac{24}{32};\dfrac{5}{8}=\dfrac{20}{32}\)

\(\dfrac{5}{6}=\dfrac{45}{54};\dfrac{4}{9}=\dfrac{24}{54}\)