Question

Viết mỗi phân số sau thành tổng các phân số khác nhau có tử số là 1: 

a, 5/6 = ................................

b, 7/8 = ................................

c, 6/5 = ...............................

d, 8/7 = ...............................

 

Answer 1

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, \(\dfrac{8}{7}=\dfrac{1}{1}+\dfrac{1}{7}\)

Answer 2

\(a,\dfrac{5}{6}=\dfrac{1}{2}+\dfrac{1}{3}\\ b,\dfrac{7}{8}=\dfrac{1}{8}+\dfrac{1}{4}+\dfrac{1}{2}\\ c,\dfrac{6}{5}=\dfrac{1}{1}+\dfrac{1}{5}\\ d,\dfrac{8}{7}=\dfrac{1}{1}+\dfrac{1}{7}\)

Answer 3

Giải:

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) \(\dfrac{8}{7}=\dfrac{1}{1}+\dfrac{1}{7}\)

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