SOLUTION: Given two terms of the arithmetic sequence, a7=12 and a10=-9, find a1 and d.

SOLUTION: Given two terms of the arithmetic sequence, a7=12 and a10=-9, find a1 and d.

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Question 958597: Given two terms of the arithmetic sequence, a7=12 and a10=-9, find a1 and d.
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!

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Subtracting,

Then use either value for find .

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