tolong pakai rumus ya kak fungsi invers

[tex] f(x) = \frac{2x + 3}{ - 5x + 4} \\ y = \frac{2x + 3}{ - 5x + 4} \\ y( - 5x + 4) = 2x + 3 \\ - 5xy + 4y = 2x + 3 \\ - 5xy - 2x = - 4y + 3 \\ x( - 5y + 2) = - 4y + 3 \\ x= \frac{ - 4y + 3}{ - 5y + 2} \\ {f}^{ - 1} = \frac{ - 4x+ 3}{ - 5x + 2} = \frac{4x - 3}{5x - 2}[/tex]