viết mỗi phân số sau thành tổng của 3 phân số tối giản khác nhau có cùng mẫu số: 10/27, 13/12, 15/8
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\(\frac{10}{27}=\frac{1}{27}+\frac{5}{27}+\frac{4}{27}\)
\(\frac{13}{12}=\frac{1}{12}+\frac{7}{12}+\frac{5}{12}\)
\(\frac{15}{8}=\frac{7}{8}+\frac{5}{8}+\frac{3}{8}\)
\(\frac{10}{27}=\frac{1}{27}+\frac{5}{27}+\frac{4}{27}\)
\(\frac{13}{12}=\frac{1}{12}+\frac{5}{12}+\frac{7}{12}\)
\(\frac{15}{8}=\frac{3}{8}+\frac{5}{8}+\frac{7}{8}\)
10/27=1/27+4/27+5/27
13/12=13/12-1/12+0/12
15/8=7/8+5/8+3/8
kik
\(\dfrac{7}{12}=\dfrac{3}{12}+\dfrac{4}{12}=\dfrac{1}{4}+\dfrac{1}{3}\)
\(\dfrac{13}{27}=\dfrac{9}{27}+\dfrac{4}{27}=\dfrac{1}{3}+\dfrac{4}{27}\)
\(\dfrac{7}{12}\) = \(\dfrac{1+6}{12}\) = \(\dfrac{1}{12}\) + \(\dfrac{6}{12}\) = \(\dfrac{1}{12}\) + \(\dfrac{1}{2}\)
\(\dfrac{7}{12}\) = \(\dfrac{3+4}{12}\) = \(\dfrac{3}{12}\) + \(\dfrac{4}{12}\) = \(\dfrac{1}{4}\) + \(\dfrac{1}{3}\)
\(\dfrac{13}{27}\) = \(\dfrac{1+12}{27}\) = \(\dfrac{1}{27}\) + \(\dfrac{12}{27}\) = \(\dfrac{1}{27}\) + \(\dfrac{4}{9}\)
\(\dfrac{13}{27}\) = \(\dfrac{4+9}{27}\) = \(\dfrac{4}{27}\) + \(\dfrac{9}{27}\) = \(\dfrac{4}{27}\) + \(\dfrac{1}{3}\)
\(\dfrac{13}{27}\) = \(\dfrac{6+7}{27}\) = \(\dfrac{6}{27}\) + \(\dfrac{7}{27}\) = \(\dfrac{2}{9}\) + \(\dfrac{7}{27}\)
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