Bonsoir,
1)
a) [tex]1+\frac{3}{4} = \frac{4}{4}+\frac{3}{4} = \frac{4+3}{4} = \frac{7}{4}[/tex]
b) [tex]1-\frac{2}{5} = \frac{5}{5} - \frac{2}{5} = \frac{5-2}{5} = \frac{3}{5}[/tex]
c) [tex]2+\frac{1}{6} = \frac{12}{6} + \frac{1}{6} = \frac{12+1}{6} = \frac{13}{6}[/tex]
2)
[tex]\frac{8}{3} = \frac{6}{3} + \frac{2}{3} = 2+\frac{2}{3}[/tex]
Bonne soirée
