Réponse:
[tex]a = \frac{17}{3 - 10} \\ = \frac{17}{ - 7} [/tex]
[tex]b = \frac{ - 2 - ( - 17)}{5 - 8} \\ = \frac{ - 2 + 17}{ - 3} \\ = \frac{15}{ - 3} = - 5[/tex]
[tex]c = \frac{ - 4 - 5}{5 - 6} \\ = \frac{ - 9}{ - 1} = 9[/tex]
[tex]d = \frac{6 - 6 \times 4}{6 \times 2 - 2} \\ = \frac{6 - 24}{12 - 2} \\ = \frac{ - 18}{10} \\ = \frac{ - 9}{5} [/tex]
