What is the result of simplifying 6b + 4 - 3b?

• A. 3b + 4
• B. 9b + 4
• C. 3b - 4
• D. 9b - 4

Answer: (A)

To simplify the expression 6b + 4 - 3b, start by identifying and combining like terms. The terms that contain the variable 'b' are 6b and -3b. When you combine these terms, you subtract the coefficient of -3 from the coefficient of 6.

6b - 3b equals 3b. The constant term 4 remains unchanged because it is not combined with any other constant term. Therefore, the simplified form of the expression is 3b + 4.

This answer is correct as it accurately combines the like terms in the equation. Understanding how to identify and combine like terms is crucial in algebra, as it helps in simplifying expressions efficiently.