Help please with this

The 1920s was the first decade to have a nickname: “Roaring 20s" or "Jazz Age." It was a decade of prosperity and dissipation, and of jazz bands, bootleggers, raccoon coats, bathtub gin, flappers, flagpole sitters, bootleggers, and marathon dancers. (america was a booming age )

Explanation:

the answer is a) james madison.

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