What is the simplified form of 3x + 5 - x + 4?

What is the simplified form of 3x + 5 - x + 4?

• A. 3x + 9
• B. 2x + 9
• C. 4x + 9
• D. 6x + 4

Answer: (B)

To simplify the expression 3x + 5 - x + 4, start by combining like terms. Like terms are terms that contain the same variable raised to the same power. First, focus on the variable terms. You have 3x and -x. When you combine these: 3x - x = 2x. Next, combine the constant terms. You have 5 and 4, which when added together gives: 5 + 4 = 9. Putting these results together, you find that the simplified form of the original expression is: 2x + 9. This is why the option that represents 2x + 9 is the correct choice; it accurately reflects the process of combining the like terms in the original expression.

To simplify the expression 3x + 5 - x + 4, start by combining like terms. Like terms are terms that contain the same variable raised to the same power.

First, focus on the variable terms. You have 3x and -x. When you combine these:

3x - x = 2x.

Next, combine the constant terms. You have 5 and 4, which when added together gives:

5 + 4 = 9.

Putting these results together, you find that the simplified form of the original expression is:

2x + 9.

This is why the option that represents 2x + 9 is the correct choice; it accurately reflects the process of combining the like terms in the original expression.