Réponse:
A =
[tex]\frac{1}{9 } + \frac{5}{9 } = \frac{6}{9} = \frac{2}{3}
[/tex]
B=
[tex]\frac{11}{8} - \frac{3}{8} = \frac{8}{8} = 1[/tex]
C=
[tex]- 1 = \frac{ - 1}{1} = \frac{ - 2}{2}[/tex]
[tex] - 1 + \frac{7}{2} = \frac{ - 2}{2} + \frac{7}{2} = \frac{5}{2}
[/tex]
D =
[tex]\frac{7}{12} - \frac{15}{12} - \frac{1}{12} = \frac{ - 8}{12} - \frac{1}{12} = \frac{ - 9}{12} = \frac{ - 3}{4}[/tex]
E =
[tex]\frac{5}{3} = \frac{55}{33}[/tex]
[tex]\frac{20}{33} - \frac{5}{3 } = \frac{20}{33} - \frac{55}{33} = \frac{ - 35}{33}[/tex]
F =
[tex] \frac{4}{5} = \frac{8}{10} [/tex]
[tex]\frac{4}{5} + \frac{3}{10} = \frac{8}{10} + \frac{3}{10} = \frac{11}{10} [/tex]
G =
[tex] \frac{3}{1} = \frac{12}{4} [/tex]
[tex] 3 - \frac{11}{4} = \frac{12}{4} - \frac{11}{4} = \frac{1}{4} [/tex]
H =
[tex] \frac{16}{6} = \frac{8}{3} \: \: \: \: \: \: \: \frac{12}{9} = \frac{4}{3} [/tex]
[tex] \frac{16}{6} - \frac{7}{3} - \frac{12}{9} = \frac{8}{3} - \frac{7}{3} - \frac{4}{3} = \frac{ - 3}{3} = \frac{ - 1}{1} [/tex]
