Bonjour,
[tex]68 = 2 \times 2 \times 17[/tex]
[tex]96 = 2 \times 2 \times 2 \times 2 \times 2 \times 3[/tex]
[tex]180 = 2 \times 2 \times 3 \times 3 \times 5[/tex]
[tex] \frac{96}{68} = \frac{24}{17} [/tex]
[tex] \frac{180}{96} = \frac{15}{8} [/tex]
[tex] \frac{68}{180} = \frac{17}{45} [/tex]
