1. ordinary speech with no rhyme or syllable count soliloquy 2. extended speech by a character alone onstage monologue 3. lines that not everyone onstage is meant to hear aside 4. lengthy speech by one character in front of others prose

in order...

1. Prose

2. Soliloquy

3. Aside

4. Monologue

Explanation:

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