svp aidez moi pour cet exercice ​

1)

[tex]f( \frac{1}{7} ) = 7 \times \frac{1}{7} - 3 = 1 - 3 = - 2[/tex]

2)

[tex]f(x) = 32 \\ 7 x - 3 = 32 \\ 7x = 35 \\ x = 5[/tex]

3)

[tex]f( - \frac{4}{21} ) = 7 \times ( - \frac{4}{21} ) - 3 = - \frac{4}{3} - \frac{9}{3} = - \frac{13}{3} [/tex]

4)

[tex]f(x) = - 24 \\ 7x - 3 = - 24 \\ 7x = - 21 \\ x = - 3[/tex]