What happens to constants when combining like terms?

• A. They are multiplied together
• B. They can be added or subtracted
• C. They must be left alone
• D. They are squared

Answer: (B)

When combining like terms, constants can indeed be added or subtracted. Constants are numbers without variables attached to them. When you have multiple constants in an expression, you can combine them simply by performing arithmetic operations—specifically addition or subtraction as dictated by the expression.

For example, if you have an expression like (5 + 3), you can combine the constants to get (8). Alternatively, if you have something like (7 - 2), you can combine to get (5). This principle applies broadly in algebra whenever you're simplifying expressions or solving equations.

The ability to add or subtract constants allows for a more straightforward approach to simplifying expressions, ensuring that the expression remains equivalent while making it more manageable.