Bonsoir,
a.
[tex] \frac{555}{100} = \frac{111 \times5 }{20 \times 5} = \frac{111}{20} [/tex]
.
.
b.
[tex] \frac{225}{441} = \frac{25 \times 9}{49 \times 9} = \frac{25}{49} [/tex]
.
.
c.
[tex] \frac{393}{300} = \frac{131 \times 3}{100 \times 3} = \frac{131}{100} [/tex]
.
.
Bonne soirée.
