SOLUTION: The sum of the first twelve terms of an Arithmetic progression is 168. If the third term is 7, calculate:
(I) The common difference
(ii) The first term
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Question 1189354: The sum of the first twelve terms of an Arithmetic progression is 168. If the third term is 7, calculate:
(I) The common difference
(ii) The first term
Answer by josgarithmetic(39621) (Show Source): You can put this solution on YOUR website!
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The two outlined equations are linear in two unknown variables. Solve.
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