How did the newly independent united states attempt to formulate a national economy?

Alexander Hamilton's plan was for the Federal government to absorb all of the state debt and turn it into a national debt. He would then increase tariffs on foreign trades to help pay off that debt and he taxed whiskey. Hamilton hoped that as the upper class and government got richer money would trickle down the ranks to the common class.

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