Bonjour,
[tex]A = \frac{7}{6} +\frac{2}{3} \\A = \frac{7}{6} +\frac{2*2}{3*2} \\A = \frac{7}{6} + \frac{4}{6} \\A = \frac{11}{6}[/tex]
[tex]B = \frac{3}{5} +\frac{11}{10} \\B = \frac{3*2}{5*2} +\frac{11}{10} \\B = \frac{6}{10}+\frac{11}{10} \\B = \frac{17}{10}[/tex]
[tex]C = \frac{8}{9} -\frac{1}{3} \\C = \frac{8}{9} -\frac{1*3}{3*3} \\C = \frac{8}{9} -\frac{3}{9} \\C = \frac{5}{9}[/tex]
[tex]D = 5+\frac{3}{2} \\D = \frac{5}{1} +\frac{3}{2} \\D = \frac{5*2}{1*2} + \frac{3}{2}\\D = \frac{10}{2} + \frac{3}{2}\\D = \frac{13}{2}[/tex]
Bonne journée et surtout, prends bien soin de toi ;)