step-by-step
solve for C, -1 = \left(\left(V - C\right) / \left(\left(C + V\right) / 2\right)\right) / \left(\left(\left(V - V \cdot MTR\right) - C \right) / \left(\left(C + \left(V - V \cdot MTR\right) \right) / 2\right)\right)
ru