make b the subject
c=b+4/b+5
You asked:
Solve the equation \[c = b + \frac{4}{b} + 5\] for the unknown \(b\).
MathBot Answer:
$$\begin{aligned}b &= - \frac{\sqrt{\left(c - 9\right) \left(c - 1\right)}}{2} + \frac{c - 5}{2}\\b &= \frac{\sqrt{\left(c - 9\right) \left(c - 1\right)}}{2} + \frac{c - 5}{2}\end{aligned}$$ and \(b \neq 0\)