5/10 = 1/2

3/15 = 1/5

40/70 = 4/7

24/36 = 2/3

70/42 = 5/3

5/10=1/2               3/15=1/5                40/70=4/7

24/36=2/3             70/42=5/3

70/42=5/3

24/36=2/3

40/70=4/7

\(\frac{40}{70}=\frac{40:10}{70:10}=\frac{4}{7}\)

\(\frac{24}{36}=\frac{24:12}{36:12}=\frac{2}{3}\)

\(\frac{70}{42}=\frac{70:14}{42:14}=\frac{5}{3}\)

1. \(\frac{5}{10}=\frac{1}{2};\frac{3}{15}=\frac{1}{5};\frac{40}{70}=\frac{4}{7};\frac{24}{36}=\frac{2}{3};\frac{70}{42}=\frac{5}{3}\)

2. a) MSC: 12

Ta có: \(\frac{5}{3}=\frac{5.4}{3.4}=\frac{20}{12};\frac{1}{4}=\frac{1.3}{4.3}=\frac{3}{12}\)

b) MSC: 24

Ta có: \(\frac{3}{8}=\frac{3.3}{8.3}=\frac{9}{24}\) và \(\frac{7}{24}\)

c) MSC: 30

Ta có: \(\frac{1}{2}=\frac{1.15}{2.15}=\frac{15}{30}\)

            \(\frac{2}{3}=\frac{2.10}{3.10}=\frac{20}{30}\)

             \(\frac{3}{5}=\frac{3.6}{5.6}=\frac{18}{30}\)

1.

\(\frac{5}{10}\)=    \(\frac{5:5}{10:5}\)=    \(\frac{1}{2}\)                                    \(\frac{3}{15}\)=    \(\frac{3:3}{15:3}\)=    \(\frac{1}{5}\)

\(\frac{40}{70}\)=    \(\frac{40:10}{70:10}\)=    \(\frac{4}{7}\)                                 \(\frac{24}{36}\)=    \(\frac{24:12}{36:12}\)=    \(\frac{2}{3}\)

                   \(\frac{70}{42}\)=    \(\frac{70:14}{42:14}\)=    \(\frac{5}{3}\)

5/10 = 1/2

3/15 = 1/5

40/70 = 4/7

tk mk nha

1/2, 1/5, 4/7

đúng hết nha

18/24=3/4

15/35=3/7

40/56=5/7

96/36=16/6

ps 8/10=ps:4/5 và 32/40

k mik nha!^^^^^^^

\(\frac{18}{24}=\frac{3}{4}\)

\(\frac{15}{35}=\frac{3}{7}\)

\(\frac{40}{56}=\frac{5}{7}\)

\(\frac{96}{36}=\frac{8}{3}\)

Phân số bằng \(\frac{8}{10}\) là:

\(\frac{12}{15};\frac{4}{5};\frac{32}{40}\)

40/70

=40:10/70:10

=4/7

Đáp số: 4/7

dm máy tính đâu

a, Phân số tối giản là những phân số : \(\frac{41}{50};\frac{51}{70}\)

b, Rút gọn các phân số còn lại :

\(\frac{15}{36}=\frac{15:3}{36:3}=\frac{5}{12}\)

\(\frac{55}{100}=\frac{55:5}{100:5}=\frac{11}{20}\)

\(\frac{33}{57}=\frac{33:3}{57:3}=\frac{11}{19}\)

\(\frac{125}{75}=\frac{125:25}{75:25}=\frac{5}{3}\)

a, 41/50 ; 51/70

b, 15/36=5/12 ; 55/100=11/20 ; 33/57=11/19; 125/75=5/3

ok

\(\dfrac{3}{6}=\dfrac{3:3}{6:3}=\dfrac{1}{2}\\ \dfrac{18}{24}=\dfrac{18:6}{24:6}=\dfrac{3}{4}\\ \dfrac{5}{35}=\dfrac{5:5}{35:5}=\dfrac{1}{7}\\ \dfrac{40}{90}=\dfrac{40:10}{90:10}=\dfrac{4}{9}\\ \dfrac{75}{30}=\dfrac{75:15}{30:15}=\dfrac{5}{2}\)

\(\dfrac{3}{6}=\dfrac{3:3}{6:3}=\dfrac{1}{2}\\ \dfrac{18}{24}=\dfrac{18:6}{24:6}=\dfrac{3}{4}\\ \dfrac{5}{35}=\dfrac{5:5}{35:5}=\dfrac{1}{7}\\ \dfrac{40}{90}=\dfrac{40:10}{90:10}=\dfrac{4}{9}\\ \dfrac{75}{30}=\dfrac{75:15}{30:15}=\dfrac{5}{2}\)