Algebra-1

Question Analysis
This question tests the student's ability to solve a one-step equation by using the inverse operation of addition, which is subtraction.

Key Concept Explanation
The key concept here is the use of inverse operations to isolate the variable. In this case, subtracting 15 from both sides of the equation will isolate .

Step-by-step Solution
1. Start with the equation:
2. Subtract 15 from both sides:

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