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Tính bằng cách thuận tiện:
\(\frac{13}{7}\)+ \(\frac{5}{6}\)+ \(\frac{2}{7}\)+ \(\frac{7}{6}\) \(\frac{1}{2}\) x \(\frac{5}{6}\)+ \(\frac{1}{2}\)x \(\frac{11}{6}\)
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\(\frac{1}{3}+\frac{7}{2}=\frac{2+21}{6}=\frac{23}{6}\)
Đúng 100%
\(=\frac{23}{6}\)
Đúng 100% đó bạn
Đúng 100% đó bạn
Đúng 100% đó bạn
\(\frac{18}{91}\)\(\frac{23}{114}\) MSC :10374
\(\frac{18\cdot114}{91\cdot114}=\frac{1052}{10374}\)
\(\frac{23\cdot91}{114\cdot91}=\frac{2093}{10374}\)
\(\frac{18}{91}< \frac{23}{114}\)
HOK TỐT .
18/91 < 18/90 = 1/5 = 23/115 < 23/114
=> 18/91 < 23/114
Vậy 18/91 < 23/114
12/14 + 15/20 + 6/7 + 3/4
= ( 12/14 + 6/7 ) + ( 15/20 + 3/4 )
= ( 6/7 + 6/7 ) + ( 3/4 + 3/4 )
= 12/7 + 6/4
= 48/28 + 42/28
= 90/28
= 45/14
Tham khảo nha !!!
\(\frac{8}{15}+\frac{16}{30}+\frac{3}{5}+\frac{9}{10}+2\frac{3}{5}\)
\(=\frac{8}{15}+\frac{16}{30}+\frac{3}{5}+\frac{9}{10}+\frac{13}{5}\)
\(=\frac{16+16+18+27+78}{30}\)
\(=\frac{155}{30}\)
\(=\frac{31}{6}\)
Hc tốt #
\(\frac{8}{15}\)+\(\frac{16}{30}\)+\(\frac{3}{5}\)+\(\frac{9}{10}\)+2\(\frac{3}{5}\)
=\(\frac{16}{30}\)+\(\frac{16}{30}\)+\(\frac{18}{30}\)+\(\frac{27}{30}\)+\(\frac{13}{5}\)
=\(\frac{16+16+18+27}{30}\)+\(\frac{78}{30}\)
=\(\frac{77}{30}\)+\(\frac{78}{30}\)= \(\frac{155}{30}\)
\(\frac{3}{4}\times\frac{9}{7}\times\frac{11}{25}\)
\(=\frac{297}{700}\)
Chúc bn học tốt!!!!!
TL
\(\frac{14}{16}.\frac{26}{18}=\frac{91}{72}\)
HT
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TL
\(\frac{14}{16}.\frac{26}{18}=\frac{91}{72}\)
HT
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