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\(\frac{22}{77}+\frac{56}{98}+\frac{25}{105}\)
\(=\frac{6}{7}+\frac{25}{105}\)
\(=\frac{23}{21}=1\frac{2}{21}\)
\(\frac{3}{10}x\frac{5}{6}x\frac{7}{18}x\frac{9}{14}\)
= \(\frac{15}{60}x\frac{7}{18}x\frac{9}{14}\)
= \(\frac{105}{1080}x\frac{9}{14}\)
= \(\frac{945}{15120}\)
= \(\frac{1}{16}\)
3/10* 5/6* 7/18* 9/14
=1/4* 7/18* 9/14
=7/72* 9/14
=1/16
\(\frac{69}{77}\times\frac{21}{11}=\frac{69\times21}{77\times11}=\frac{1449}{847}=\frac{207}{121}\)
\(\frac{69}{77}:\frac{21}{11}=\frac{69}{77}\times\frac{11}{21}=\frac{69\times11}{77\times21}=\frac{759}{1617}=\frac{23}{49}\)
\(\frac{66}{77}-\frac{21}{11}=\frac{66}{77}-\frac{147}{77}=\frac{66-147}{77}=\frac{-81}{77}\)
\(\frac{69}{77}+\frac{21}{11}=\frac{69}{77}+\frac{147}{77}=\frac{69+147}{77}=\frac{216}{77}\)
~ Hok tốt ~
các phân số bằng nhau là :
\(\frac{15}{25}=\frac{21}{35}=\frac{3}{5}=\frac{75}{125}\)
\(\frac{7}{4}=\frac{49}{28}=\frac{105}{60}\)
chắc từ đầu thick kid nhưng khi xem hội pháp sư lại thick cả natsu đó mà hihi....
\(\frac{2010}{2011}< \frac{2011}{2012}\)
\(\frac{11}{12}=\frac{22}{24}\)
\(\frac{25}{30}>\frac{25}{49}\)
\(\frac{1}{5}< \frac{3}{8}\)
\(\frac{1995}{1997}< \frac{1995}{1996}\)
54/12:64/12=27/32
56/45x54/51=112/85
56/20+58/21=584/105
21/78-12/78=3/26
Bài 1 :
\(\frac{22}{55}=\frac{22:11}{55:11}=\frac{2}{5}\)
\(\frac{63}{81}=\frac{63:9}{81:9}=\frac{7}{9}\)
Bài 2 :
\(\frac{3}{16}=\frac{3\times24\times56}{16\times24\times56}=\frac{4032}{21504}\)
\(\frac{5}{24}=\frac{5\times16\times56}{24\times16\times56}=\frac{4480}{21504}\)
\(\frac{21}{56}=\frac{21\times24\times16}{56\times24\times16}=\frac{8064}{21504}\)
Học tốt # ^-<
\(\frac{22}{77}+\frac{56}{98}+\frac{25}{105}\)
\(\frac{2}{7}+\frac{4}{7}+\frac{5}{21}\)
\(\frac{23}{21}\)
2/7 +4/7+5/21=6/7+5/21=23/21