3 / 7 + 2 / 7 = 5 / 7
2 / 7 + 3 / 7 = 5 / 7
=> 3 / 7 + 2 / 7 = 2 / 7 + 3 / 7
\(\frac{3}{7}+\frac{2}{7}=\frac{3+2}{7}=\frac{5}{7}\)
\(\frac{2}{7}+\frac{3}{7}=\frac{2+3}{7}=\frac{5}{7}\)
\(\frac{3}{7}+\frac{2}{7}=\frac{2}{7}+\frac{3}{7}\)
3/7+2/7=5/7
2/7+3/7=5/7
3/7+2/7=2/7+3/7.
3/7+2/7=0,8 2/7+3/7=0.8 3/7+2/7=2/7+3/7
3/7+2/7=5/7
2/7+3/7=5/7
3/7+2/7=2/7+3/7
K mình nhé
\(\frac{3}{7}+\frac{2}{7}=\frac{5}{7}\)
\(\frac{2}{7}+\frac{3}{7}=\frac{5}{7}\)
\(\frac{3}{7}+\frac{2}{7}=\frac{2}{7}+\frac{3}{7}\)
\(\frac{3}{7}+\frac{2}{7}=\frac{5}{7}\) ; \(\frac{2}{7}+\frac{3}{7}=\frac{5}{7}\)
Vậy : \(\frac{3}{7}+\frac{2}{7}=\frac{2}{7}+\frac{3}{7}\)
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