To be able to answer the question above, understand that LC is the sum of the lengths of LM and MC. By this the following equation is generated,
LC = LM + MC
6x - 6 = 11 + 2x + 5
Solving for the value of x gives x = 5.5.
Substitute the obtained value of x to the expression for the length of MC.
MC = 2x + 5 = 2(5.5) + 5 = 16
Thus, the length of MC is 16 units.