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The third term of an arithmetic sequence is 21, and the eighth term is 56. The first term is_______

The third term of an arithmetic sequence is 21, and the eighth term is 56. The first term is_______
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The third term of an arithmetic sequence is 21, and the eighth term is 56. The first term is_______

User Jeninne
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The first term is 7 because they both can be divided by 7.

User Amarjeet
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