\(\dfrac{70}{90}=\dfrac{70:10}{90:10}=\dfrac{7}{9}\)

= 9/7

50>5;70>7=5/7

50/70 = 5/7

\(\frac{50}{70}=\frac{5}{7}\)

40/70

=40:10/70:10

=4/7

Đáp số: 4/7

dm máy tính đâu

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

\(\frac{301}{70}=\frac{301:7}{70:7}=\frac{43}{10}\)

.....................

........................

Ta có:

\(\frac{301}{70}\)= \(\frac{43}{10}\)

Đề bài: Rút gọn phân số \(\frac{301}{70}\)

Ta có: \(\frac{301}{70}=\frac{301\div7}{70\div7}=\frac{43}{10}\)

Vậy: \(\frac{301}{70}\)rút gọn thành\(\frac{43}{10}\)

\(\dfrac{50}{70}=\dfrac{50:10}{70:10}=\dfrac{5}{7}\)
\(\dfrac{24}{120}=\dfrac{24:24}{120:24}=\dfrac{1}{5}\)

\(\dfrac{50}{70}=\dfrac{5}{7}\\ \dfrac{24}{120}=\dfrac{1}{5}\)

50/70=50:10/70:10=5/7

24/120=24:24/120:24=1/5 

26/37

\(\dfrac{26}{37}\)

\(\frac{70}{95}=\frac{15}{19}\)

70/95=14/19

\(\frac{70}{95}\)=\(\frac{14}{19}\)

HT~

1/2 , 1/5, 4/7,  2/3 , 5/3

5/10=1/2

3/15=1/5

40/70=4/7

24/36=2/3

70/42=5/3

CHÚC BÀ HỌC GIỎI

bài làm:

5/10=1/2  3/15=1/5  40/70=4/7   24/36=4/6   70/42=5/3

học tốt nha :3

\(\dfrac{74}{100}=\dfrac{37}{50}\)
\(\dfrac{34}{51}=\dfrac{2}{3}\)
\(\dfrac{2525}{2727}=\dfrac{25}{27}\)
\(\dfrac{135135}{500500}=\dfrac{27}{100}\)