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a)
\(\frac{5}{6}=\frac{5X4}{6X4}=\frac{20}{24}\)
\(\frac{7}{8}=\frac{7X3}{8X3}=\frac{21}{24}\)
b)
\(\frac{22}{15}=\frac{22X5}{15X5}=\frac{110}{75}\)
\(\frac{17}{25}=\frac{17X3}{25X3}=\frac{51}{75}\)
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1.\(\frac{5}{6}\) và \(\frac{36}{6}\)
2.\(\frac{110}{75}\) và \(\frac{51}{75}\)
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a)\(\frac{21}{24};\frac{28}{24};\frac{72}{24}\)
b)\(\frac{6}{12};\frac{8}{12};\frac{9}{12};\frac{60}{12}\)
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a: 5/3=10/6=25/15=35/21
b: 5/7=35/49
6/15=12/30
4/5=16/20
c: 6=216/36=324/54=108/18
a)\(\dfrac{5}{3}=\dfrac{10}{6}=\dfrac{25}{15}=\dfrac{35}{21}\)
b)\(\dfrac{5}{7}=\dfrac{35}{49};\dfrac{6}{15}=\dfrac{12}{30};\dfrac{4}{5}=\dfrac{16}{20}\)
c) \(6=\dfrac{216}{36}=\dfrac{324}{54}=\dfrac{108}{18}\)
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Câu 1:
\(\frac{3}{8}=\frac{3x3}{8x3}=\frac{9}{24}\)
\(\frac{5}{6}=\frac{5x4}{6x4}=\frac{20}{24}\)
Câu 2:
\(\frac{5}{8}=\frac{5x3}{8x3}=\frac{15}{24}\)
\(3=\frac{72}{24}\)
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\(\dfrac{7}{12}=\dfrac{7\times5}{12\times5}=\dfrac{35}{60}\)
\(\dfrac{23}{30}=\dfrac{23\times2}{30\times2}=\dfrac{46}{60}\)
\(\frac{15}{30}\)= \(\frac{1}{2}\)= \(\frac{3}{6}\)
\(\frac{2}{3}\)= \(\frac{4}{6}\)
15/30 = 3/6
2/3 = 4/6