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\(1,\frac{3}{5}\&\frac{1}{2}\)
\(+,\frac{3}{5}=\frac{3.2}{5.2}=\frac{6}{10}\)
\(+,\frac{1}{2}=\frac{1.5}{2.5}=\frac{5}{10}\)
\(2,\frac{4}{7}\&\frac{9}{14}\)
\(+,\frac{4}{7}=\frac{4.2}{7.2}=\frac{8}{14}\)
\(+,\frac{9}{14}=\frac{9}{14}\)
\(3,\frac{2}{3}\&\frac{3}{5}\)
\(+,\frac{2}{3}=\frac{2.5}{3.5}=\frac{10}{15}\)
\(+,\frac{3}{5}=\frac{3.3}{5.3}=\frac{9}{15}\)
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5/3 và 1/4 =20/12 và 3/12
3/8 và 7/24=9/24 và 7/24
1/2;2/3;3/5=15/30;20/30;18/30
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\(\frac{5}{3}=\frac{5\cdot4}{3\cdot4}=\frac{20}{12};\frac{1}{4}=\frac{1\cdot3}{4\cdot3}=\frac{3}{12}\)
\(\frac{3}{8}=\frac{3\cdot3}{8\cdot3}=\frac{9}{24};\frac{7}{24}\)
\(\frac{1}{2}=\frac{1\cdot15}{2\cdot15}=\frac{15}{30};\frac{2}{3}=\frac{2\cdot10}{3\cdot10}=\frac{20}{30};\frac{3}{5}=\frac{3\cdot6}{5\cdot6}=\frac{18}{30}\)
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a)1/2=6/12;2/3=8/12;5/6=10/12;giữ nguyên phan số 7/12
b)5/6=60/72;4/9=32/72;7/24=21/72
c)3/4=45/60;5/12=25/60;2/3=40/60;7/15=28/60
a) \(\frac{1}{3},\frac{1}{5},\frac{1}{7}=\frac{35}{105},\frac{21}{105},\frac{15}{105}\)
b) \(\frac{5}{2},\frac{34}{7},\frac{3}{14}=\frac{70}{28},\frac{136}{28},\frac{6}{28}\)