SOLUTION: If s=n/2(2a+(n-1)d)express d in terms of a,n and S

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Question 1105981: If s=n/2(2a+(n-1)d)express d in terms of a,n and S
Answer by ikleyn(52781) About Me  (Show Source):
You can put this solution on YOUR website!
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First step is to divide both sides by n%2F2.