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\(\dfrac{90}{126}=\dfrac{5}{7}\)
\(\Rightarrow\dfrac{90}{126}< \dfrac{6}{7}\) (Vì \(\dfrac{5}{7}< \dfrac{6}{7}\))
\(\dfrac{35}{49}=\dfrac{5}{7}\)
\(\Rightarrow\dfrac{90}{126}=\dfrac{35}{49}\) (Vì \(\dfrac{5}{7}=\dfrac{5}{7}\))
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\(\dfrac{90}{120}=\dfrac{30.3}{30.4}=\dfrac{3}{4}\)
\(\dfrac{15}{25}=\dfrac{5.3}{5.5}=\dfrac{3}{5}\)
\(\dfrac{18}{45}=\dfrac{9.2}{9.5}=\dfrac{2}{5}\)
\(\dfrac{36}{64}=\dfrac{4.9}{4.16}=\dfrac{9}{16}\)
\(\dfrac{32}{72}=\dfrac{8.4}{8.9}=\dfrac{4}{9}\)
\(\dfrac{84}{49}=\dfrac{7.12}{7.7}=\dfrac{12}{7}\)
\(\dfrac{90}{120}=\dfrac{3}{4};\dfrac{15}{25}=\dfrac{3}{5};\dfrac{18}{45}=\dfrac{2}{5};\dfrac{36}{64}=\dfrac{9}{16};\dfrac{32}{72}=\dfrac{4}{9};\dfrac{84}{49}=\dfrac{12}{7}\)
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\(\dfrac{92}{100}\text{=}\dfrac{92:4}{100:4}\text{=}\dfrac{23}{25}\)
\(\dfrac{72}{180}\text{=}\dfrac{72:36}{180:36}\text{=}\dfrac{2}{5}\)
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\(\frac{72}{96}=\frac{72\div24}{96\div24}=\frac{3}{4}\)
72/96 = 72 : 24 / 96 : 24 = 3/4
lưu ý:
/ : là ngăn cách phân số
: chia
\(\frac{90}{72}\)= \(\frac{90:18}{72:18}\)= \(\frac{5}{4}\)
90/72 = 10/8 = 5/4 nhe bạn !