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16/21=1/3+3/7
=1/4+43/84
=1/7+13/21
13/14=1/2+3/7
=1/3+25/42
=1/4+19/28
=1/7+10/21
16/21=1/3+3/7
=1/4+43/84
=1/7+13/21
13/14=1/2+3/7
=1/3+25/42
=1/4+19/28
=1/7+10/21
đúng 100 % nka
\(\frac{16}{21}=\frac{1}{7}+\frac{1}{3}+\frac{2}{7}=.......\)
\(\frac{13}{14}=\frac{1}{2}+\frac{1}{7}+\frac{2}{7}=.......\)
chúc em học tốt !!!!
\(\frac{16}{21}=\frac{1}{7}+\frac{13}{21}=\frac{1}{21}+\frac{5}{7}\)
\(\frac{13}{14}=\frac{5}{7}+\frac{3}{14}=\frac{1}{2}+\frac{3}{7}\)
\(\frac{13}{15}\) = \(\frac{1}{5}\) + \(\frac{2}{3}\) = \(\frac{2}{5}\) + \(\frac{7}{15}\) = \(\frac{1}{3}\) + \(\frac{8}{15}\)
\(\frac{23}{20}\) = \(\frac{9}{10}\) + \(\frac{1}{4}\) = \(\frac{1}{2}\) + \(\frac{13}{20}\) = \(\frac{1}{5}\) + \(\frac{19}{20}\) = \(\frac{3}{10}\) + \(\frac{17}{20}\) = ....
Học tốt !
\(\dfrac{14}{21}=\dfrac{14:7}{21:7}=\dfrac{2}{3}=\dfrac{1}{3}+\dfrac{1}{3}\)
\(\dfrac{15}{29}=\dfrac{1+14}{29}=\dfrac{1}{29}+\dfrac{14}{29}\)
\(\dfrac{9}{35}=\dfrac{1+8}{35}=\dfrac{1}{35}+\dfrac{8}{35}\)
\(\dfrac{16}{27}=\dfrac{2+14}{27}=\dfrac{2}{27}+\dfrac{14}{27}\)
16/21 = 4/24+7/21+5/21
13/14=1/14+5/14+1/2
nhớ ****
Bằng 71/42