Algebra-1

Question Analysis
This question assesses the student's ability to calculate the common difference in an arithmetic sequence. The student needs to use the given first and second terms to find the common difference.

Key Concept Explanation
The common difference in an arithmetic sequence is the difference between any two consecutive terms. It can be calculated using the formula .

Step-by-step Solution
1. Identify the given values: and .
2. Use the formula

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