Bonjour,
[tex]A = \frac{9}{14} + \frac{6}{7}[/tex]
[tex]A = \frac{9}{14} + \frac{12}{14}[/tex]
[tex]A = \frac{9+12}{14}[/tex]
[tex]A = \frac{19}{14}[/tex]
[tex]B = \frac{2}{5} - \frac{4}{25}[/tex]
[tex]B = \frac{10}{25} - \frac{4}{25}[/tex]
[tex]B = \frac{10-4}{25}[/tex]
[tex]B = \frac{6}{25}[/tex]
[tex]C = \frac{3}{20} - \frac{1}{10}[/tex]
[tex]C = \frac{3}{20} - \frac{2}{20}[/tex]
[tex]C = \frac{3-2}{20}[/tex]
[tex]C = \frac{1}{20}[/tex]
[tex]D = \frac{5}{7} - \frac{4}{21}[/tex]
[tex]D = \frac{15}{21} - \frac{4}{21}[/tex]
[tex]D = \frac{15-4}{21}[/tex]
[tex]D = \frac{11}{21}[/tex]
[tex]E = \frac{10}{7} - \frac{10}{63}[/tex]
[tex]E = \frac{90}{63} - \frac{10}{63}[/tex]
[tex]E = \frac{90-10}{63}[/tex]
[tex]E = \frac{80}{63}[/tex]
[tex]F = \frac{7}{2} + \frac{3}{14}[/tex]
[tex]F = \frac{49}{14} + \frac{3}{14}[/tex]
[tex]F = \frac{49+3}{14}[/tex]
[tex]F = \frac{52}{14}[/tex]
[tex]G = \frac{5}{8} + \frac{5}{2}[/tex]
[tex]G = \frac{5}{8} + \frac{20}{8}[/tex]
[tex]G = \frac{5+20}{8}[/tex]
[tex]G = \frac{25}{8}[/tex]
[tex]H = \frac{3}{2} - \frac{7}{12}[/tex]
[tex]H = \frac{18}{12} - \frac{7}{12}[/tex]
[tex]H = \frac{18-7}{12}[/tex]
[tex]H = \frac{11}{12}[/tex]
Bonne journée :)
