[tex] \frac{6}{15}= \frac{6\div3}{15\div3}= \frac{2}{5} [/tex]
[tex]\frac{6}{15}=\frac{6\cdot2}{15\cdot2}= \frac{12}{30} [/tex]
[tex]\frac{6}{15}=\frac{6\div100}{15\div100}= \frac{600}{1500} [/tex]
To obtain an equivalent fraction, you have to multiply or simplify that fraction.
