Respuesta :

Rabin
3/10 + 2/5
= 3/10 + 2/2(2/5)
= 3/10 + 4/10
= 7/10
To add two fractions, the denominators have to be the same. 

Make the denominators the same:
[tex] \dfrac{3}{10} + \dfrac{2}{5} [/tex]

[tex] \dfrac{3}{10} + \dfrac{2\times 2}{5\times 2} [/tex]

[tex] \dfrac{3}{10} + \dfrac{4}{10} [/tex]

Combine them:
[tex] \dfrac{7}{10}[/tex]

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