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a) \(\frac{4}{5}=\frac{1}{5}+\frac{3}{5}\)
b) \(\frac{17}{21}=\frac{13}{21}+\frac{4}{21}\)
như z ak bn!
\(\frac{4}{5}=\frac{1}{5}+\frac{3}{5}\)
\(\frac{17}{21}=\frac{1}{21}+\frac{16}{21}\)
chúc bạn học tốt
\(\dfrac{14}{21}=\dfrac{14:7}{21:7}=\dfrac{2}{3}=\dfrac{1}{3}+\dfrac{1}{3}\)
\(\dfrac{15}{29}=\dfrac{1+14}{29}=\dfrac{1}{29}+\dfrac{14}{29}\)
\(\dfrac{9}{35}=\dfrac{1+8}{35}=\dfrac{1}{35}+\dfrac{8}{35}\)
\(\dfrac{16}{27}=\dfrac{2+14}{27}=\dfrac{2}{27}+\dfrac{14}{27}\)
a/ 25/27= 1/3+1/9+1/27+1/135+1/5+1/45+1/90+1/10+1/180+1/2+1/36+1/4+1/12
b/ 15/16=1/2 + 1/8 + 1/16 + 1/4
10/27: 1/27+7/27+2/27
13/12: 1/12+7/12+5/12
15/8:7/8+3/8+5/8
10/27 = 1/27+2/27+7/27
13/12 = 1/12+5/12+7/12
15/8 = 3/8+5/8+7/8
a)3/5+1/5
b)16/21+1/21