Answer:
7x = y - 7
Step-by-step explanation:
→ Replace the f(x) with a y
[tex]y=\frac{x-7}{x}[/tex]
→ Make x the subject by first multiplying both sides by x
[tex]xy=x-7[/tex]
→ Now rearrange to get all x on one side
[tex]x-xy = 7[/tex]
→ Factorise
[tex]x(1-y)=7[/tex]
→ Divide both sides by 1-y
[tex]\frac{7}{1-y}[/tex]
