rasionalkan penyebut pecahan berikut 3 per √7

[tex] \frac{3}{ \sqrt{7} }= \frac{3}{ \sqrt{7} }\times \frac{ \sqrt{7}}{ \sqrt{7}} = \frac{3\times \sqrt{7}}{ \sqrt{7} \times \sqrt{7}} = \frac{3 \sqrt{7}}{7} = \bold{\frac{3}{7} \sqrt{7}} [/tex]