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a: \(1.5:2.16=\dfrac{25}{36}\)
b: \(\dfrac{3}{8}:0.54=\dfrac{25}{36}\)
c: \(-0.375:3.63=-\dfrac{25}{242}\)
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Thay tỉ số giữa các số hữu tỉ bằng tỉ số giữa các số nguyên:
a, 1,5 : 2,16
b, 30/7 : 3/5
c, 2/9 : 0,31
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a) \(1,5:2,16=\frac{1,5}{2,16}=\frac{25}{36}\)
b) \(\frac{30}{7}:\frac{3}{5}=\frac{30}{7}.\frac{5}{3}=\frac{50}{7}\)
c) \(\frac{2}{9}:0,31=\frac{2}{9}.\frac{1}{0,31}=\frac{200}{279}\)
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a)\(1,5:2,16=15:216=5:72\)
b)\(4\dfrac{2}{7}:\dfrac{3}{5}=\dfrac{30}{7}:\dfrac{3}{5}=\dfrac{30}{7}.\dfrac{5}{3}=\dfrac{50}{7}=50:7\)
c)\(\dfrac{\dfrac{2}{9}}{0,31}=\dfrac{2}{9}:\dfrac{31}{100}=\dfrac{2}{9}.\dfrac{100}{31}=\dfrac{31}{450}=31:450\)
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\(1,5:2,16=150:216\)
\(4\frac{2}{7}:\frac{3}{5}=\frac{30}{7}:\frac{3}{5}=50:7\)
\(\frac{2}{9}:0,31=\frac{2}{9}\times900:0,31\times900=200:279\)
\(\frac{1.5}{2.16}=\frac{1.5\times100}{2.16\times100}=\frac{150}{216}=\frac{150:6}{216:6}=\frac{25}{36}\)
\(\frac{25}{36}\)