Answer :

luana
[tex]\frac{3}{5}f+24=4-\frac{1}{5}f\ \ \ \ |Multiply\ by\ 5\\\\ 3f+120=20-f\ \ \ |Add\ f\\\\ 4f+120=20\ \ \ |Subtract\ 120\\\\ 4f=-100\ \ \ |Divide\ by\ 4\\\\ f=-25\\\\ Solution\ is\ f=-25.[/tex]