SOLUTION: Solve for a: s=n/2 [2a+(n-1)d]

SOLUTION: Solve for a: s=n/2 [2a+(n-1)d]

Algebra.Com

Question 668686: Solve for a: s=n/2 [2a+(n-1)d]
Answer by lynnlo(4176) (Show Source): You can put this solution on YOUR website!
S=N/2(DN-D+2A)
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