how did feudalism in china fail in the end to fulfill its original purpose?

 instead of maintaining Zhou control, it led to independent lords. (Trunko changed it because Feudalism is when individual lords have power and the rich and poor gap did not occur unit a later dynasty)

the law supported victims of political persecution.

explanation:

the perimeter of a triangle is 69 cm. side a is 5 cm shorter than side b. side c is twice as long as side a. find the length of each side. i need to know how to do it in 2 equations.  

equations:

a = b-5

c = 2a

a + b + c = 69