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

70/42=5/3

24/36=2/3

40/70=4/7

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

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

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

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

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

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

5/10 = 1/2

3/15 = 1/5

40/70 = 4/7

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

\(\dfrac{70}{74}\) = \(\dfrac{35}{37}\)

\(\dfrac{70}{74}=\dfrac{35\cdot2}{37\cdot2}=\dfrac{35}{37}\)

\(\dfrac{70}{74}\)=\(\dfrac{70:2}{74:2}\)=\(\dfrac{35}{37}\)

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

= 9/7

50>5;70>7=5/7

50/70 = 5/7

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

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

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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 

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

70/95=14/19

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

HT~