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\(\frac{17}{34}=\frac{1}{2}\), \(\frac{60}{70}=\frac{6}{7}\),\(\frac{126}{255}=\frac{42}{85}\),\(\frac{24}{72}=\frac{1}{3}\), \(\frac{105}{30}=\frac{7}{2}\), \(\frac{78}{56}=\frac{39}{28}\)
\(\frac{1}{2},\frac{6}{7},\frac{42}{85},\frac{1}{3},\frac{7}{2},\frac{39}{28}\)
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6/8 = 3/4 ; 39/65 = 3/5 ; 70/42 = 5/3 ; 84/231 = 4/11 ; 117117/504504 = 13/56 ; 7/35 = 1/5 ; 112/140 = 4/5 ; 165/110 = 3/2 ; 30/105 = 2/7 ; 153153/414414 = 17/46
Bài làm:
\(\frac{215}{300}=\frac{43}{60}\)
\(\frac{1200}{2010}=\frac{40}{67}\)
\(\frac{105}{420}=\frac{1}{4}\)
\(\frac{125}{420}=\frac{25}{84}\)
#Học_tốt
\(\dfrac{215}{300}\) = \(\dfrac{215:5}{300:5}\) = \(\dfrac{43}{60}\)
\(\dfrac{1200}{2010}\) = \(\dfrac{1200:30}{2010:30}\) = \(\dfrac{40}{67}\)
\(\dfrac{105}{420}\) = \(\dfrac{105:105}{420:105}\) = \(\dfrac{1}{4}\)
\(\dfrac{125}{420}\) = \(\dfrac{125:5}{420:5}\) = \(\dfrac{25}{84}\)
\(\frac{301}{70}=\frac{301:7}{70:7}=\frac{43}{10}\)
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Ta có:
\(\frac{301}{70}\)= \(\frac{43}{10}\)
\(\dfrac{70=70:35=2}{105=105:35=3}\)
\(\dfrac{70}{105}=\dfrac{70:35}{105:35}=\dfrac{2}{3}\)