In 2008 president barack obama enjoyed widespread support among democrats and others, despite what unique characteristic for a presidential candidate?

The correct answer is:  

Barack Obama was the first Black Candidate to Lead a Major Political Party.  

At the 2008 Democratic National Convention, Obama prevailed over Senator Hillary Rodham Clinton, after a historic campaign.  

By becoming the first African American presidential candidate for a major party, he broke racial barriers all over the world.  

i'll write a docs for you. hold on for a moment

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