What is the simplified form of 7a + 4 - 3a?

• A. 4a + 4
• B. 10a + 4
• C. 3a + 4
• D. 4a - 4

Answer: (A)

To simplify the expression 7a + 4 - 3a, you start by identifying the like terms. In this case, the like terms are the terms that contain the variable 'a': 7a and -3a.

First, combine these like terms. To do this, subtract 3a from 7a, which gives you:

7a - 3a = 4a.

Now, you also have the constant term in the expression, which is +4. Since there are no other constant terms to combine with it, you simply keep it as is.

Putting it all together, the simplified expression is:

4a + 4.

This matches the provided correct answer. Therefore, the simplified form of the expression is indeed 4a + 4, showing that you properly combined the like terms and simplified the expression accurately.