SOLUTION: S10=-20 and d=4 find a1

SOLUTION: S10=-20 and d=4 find a1

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Question 566014: S10=-20 and d=4 find a1

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
S10=-20 and d=4 find a1
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S(10) = a(1) + (n-1)d
-20 = a(1) + 9*4
a(1) = -20-36
a(1) = -56
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Cheers,
Stan H.
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