Question

tính phân số

2/7 + 3           4 + 2/3              5 + 3/15

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Answer 1

2/7 +3=23/7

4+2/3=14/3

5+3/15=26/5

Answer 2

2/7 + 3 = 2/7 + 3/1 = 23/7

4 + 2/3 = 4/1 + 2/3 = 14/3

 5 + 3/15 = 5/1+ 3/15 = 26/5

Answer 3

23/7

14/3

26/5

Answer 4

2/7 +3=23/7

4+2/3=14/3

5+3/15=26/5

Answer 5

\(\dfrac{2}{7}+\dfrac{21}{7}=\dfrac{23}{7}\)

\(4+\dfrac{2}{3}=\dfrac{12}{3}+\dfrac{2}{3}=\dfrac{14}{3}\)

\(5+\dfrac{3}{15}=\dfrac{25}{5}+\dfrac{1}{5}=\dfrac{26}{5}\)

Answer 6

23/7

14/3

26/5