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Bài 1 : Giải
a)\(\frac{6}{5};\frac{896}{5};\frac{665}{65};\frac{65}{6};\frac{5786}{1221}\)
b)\(\frac{4}{7};\frac{8}{9};\frac{2}{4};\frac{5}{56};\frac{5}{67}\)
c)\(\frac{5}{5};\frac{6}{6};\frac{43}{43};\frac{657}{657};\frac{32}{32}\)
a, \(\dfrac{5}{6}=\dfrac{1}{2}+\dfrac{1}{3}\)
b, \(\dfrac{7}{8}=\dfrac{1}{2}+\dfrac{1}{4}+\dfrac{1}{8}\)
c, \(\dfrac{6}{5}=\dfrac{1}{1}+\dfrac{1}{5}\)
d, \(\dfrac{8}{7}=\dfrac{1}{1}+\dfrac{1}{7}\)
\(a,\dfrac{5}{6}=\dfrac{1}{2}+\dfrac{1}{3}\\ b,\dfrac{7}{8}=\dfrac{1}{8}+\dfrac{1}{4}+\dfrac{1}{2}\\ c,\dfrac{6}{5}=\dfrac{1}{1}+\dfrac{1}{5}\\ d,\dfrac{8}{7}=\dfrac{1}{1}+\dfrac{1}{7}\)
\(\frac{15}{16}=\frac{1}{2}+\frac{1}{4}+\frac{1}{8}+\frac{1}{16}\)
minh bam lon ban thong cam nhe
giai lai
A=9/15=3/5=1/5+1/5+1/5
B)7/8=1/2+1/3+1/24
\(\frac{9}{15}\)rút gọn = \(\frac{3}{5}\)\(=\frac{1}{5}+\frac{1}{5}+\frac{1}{5}\)
\(\frac{7}{8}=\frac{1}{2}+\frac{1}{3}+\frac{1}{24}\)