[tex] \frac{5}{ \sqrt{15} } = \frac{5 \sqrt{15} }{15} [/tex]
bantu jawab dong kak
[tex]\frac{5}{\sqrt{15}} = \frac{5}{\sqrt{15}} \times \frac{\sqrt{15}}{\sqrt{15}} = \frac{5 \sqrt{15}}{\sqrt{225}} = \frac{5 \sqrt{15}}{15} = \frac{1}{3} \sqrt{15} [/tex]
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