The expression shown in the image is:

$3 + 6 + 2c$

Simplification:

1. Combine the constant terms $3 + 6$: $3 + 6 = 9$

2. The simplified expression is: $9 + 2c$

Final Answer:

$9 + 2c$

Let me know if you'd like further clarification!

Related Questions:

1. What are constants and variables in algebra?
2. How do you simplify algebraic expressions involving addition and subtraction?
3. What happens if you substitute a value for $c$ in $9 + 2c$?
4. Can you explain how coefficients like $2$ in $2c$ are interpreted?
5. How do you simplify expressions with more than one variable, e.g., $3 + 6 + 2c + 4d$?

Tip:

Always group like terms (constants with constants, and variable terms with variable terms) when simplifying algebraic expressions.