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

a: \(MSC:24\\ \dfrac{1}{3}=\dfrac{1\times8}{3\times8}=\dfrac{8}{24};\dfrac{1}{4}=\dfrac{1\times6}{4\times6}=\dfrac{6}{24}\)

b: \(MSC:24\\ \dfrac{5}{12}=\dfrac{5\times2}{12\times2}=\dfrac{10}{24};\dfrac{7}{6}=\dfrac{7\times4}{6\times4}=\dfrac{28}{24}\)

Đây nè:

a: 3/4=6/8

7/8=7/8

me ko nhắn

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

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

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

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

A.2/5 và 3/2 = 4/10 và 15/10

B1/4 và 5/6 = 6/24 và 20/24

C5/9 và 1/6 = 30/54 và 9/54

D.3/8 và 7/6 = 18/48 và 56/48

\(a,=\dfrac{15}{55};\dfrac{44}{55}\)

\(b,=\dfrac{7}{9};\dfrac{12}{9}\)

\(c=\dfrac{3}{6};\dfrac{2}{6};\dfrac{1}{6}\)