Question

3-6/5+7/10 bằng bao nhiêu vậy các chị ơi

khó quá

 

Answer 1

`3- 6/5 + 7/10`

`= 15/5 - 6/5 +7/10`

`= 9/5 + 7/10`

`= 18/10 + 7/10`

`= 25/10`

`= 5/2`

Answer 2

`3-6/5+7/10`

`=30/10-12/10+7/10`

`=25/10=5/2`

Answer 3

\(3-\dfrac{6}{5}+\dfrac{7}{10}\)

\(=\dfrac{15}{5}-\dfrac{6}{5}+\dfrac{7}{10}\)

\(=\dfrac{9}{5}+\dfrac{7}{10}\)

\(=\dfrac{18}{10}+\dfrac{7}{10}\)

\(=\dfrac{25}{10}=\dfrac{5}{2}\)

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