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Mathematics 7 Online
OpenStudy (wwe123):

the nth term of an AP is p and the sum of the first n term is s.prove that the first term is

OpenStudy (wwe123):

\[\frac{ 2s-pn }{ n }\]

hartnn (hartnn):

s= n/2 (a+p) find a from here...

OpenStudy (wwe123):

thanks i find it :) @hartnn

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