What is the name of the economic government that enforces the universal ownership of all property and goods, resulting in the equality both socially and economically of everyone in the community?

The name of such economic government is a communist government. Communism is a form of socialism that, as the German philosopher and socialist revolutionary Karl Max explained in The Communist Manifesto (1848), rejects private property and believes in the collective ownership of all property and goods - everything a person owns is collectively shared with everyone else. This, its advocates believe, will be ultimately conducive to a classless society.  

simplify brackets

8 - 2a - 7 = a + 40

simplify 8 - 2a - 7 to -2a + 1

-2a + 1 = a + 40

add 2a to both sides

1 = a + 40 + 2a

simplify a + 40 + 2a to 3a + 40

1 = 3a + 40

subtract 40 from both sides

1 - 40 = 3a

simplify 1 - 40 o -39

-39 = 3a

divide both sides by 3

-39/3 = a

simplify 39/3 to 13

-13 = a

switch sides

a = -13