bonjour
4 + 9/10 = 40/10 + 9/10 = 49 /10
Bonjour :)
[tex]4+\frac{9}{10}\\\\\frac{4\times 10}{1\times 10}+\frac{9}{10}\\\\\frac{40+9}{10}=\frac{49}{10}=4,9[/tex]
Si tu as des questions, n'hésite pas! :)
