If:
Solve the following addition problem:
If:
Solve the following addition problem:
Let's solve the problem step-by-step:
Step 1: Identify the substitution needed.
We are given that . Thus, we need to solve by substituting with 7.
Step 2: Substitute the value into the addition problem.
The expression becomes .
Step 3: Perform the addition.
To find , add the two numbers:
Thus, the solution to the problem is .
Correct Answer Choice: