Make f the subject of the formula:𝑎=𝑏𝑓−9𝑥a=bf−9x

Sure, here are the steps to make f the subject of the formula:

1. Start with the original equation: a = bf - 9x
2. Add 9x to both sides to isolate the term with f: a + 9x = bf
3. Finally, divide both sides by b to solve for f: f = (a + 9x) / b

So, f is the subject of the formula.