b=(7d-a)^3 solve for a
You asked:
Solve the equation \[b = {\left( 7 d - a \right)}^{3}\] for the unknown \(a\).
MathBot Answer:
$$\begin{aligned}a &= 7 d + \sqrt[3]{- b}\\a &= 7 d + \sqrt[3]{- b} \left(- \frac{1}{2} - \frac{\sqrt{3} i}{2}\right)\\a &= 7 d + \sqrt[3]{- b} \left(- \frac{1}{2} + \frac{\sqrt{3} i}{2}\right)\end{aligned}$$