Question:

Maths help. changing the subject of the formula

by  |  earlier

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make a the subject of the formula

S= n/2 [ 2a d (n-1) ]

please show method in detail

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  1. answer = s / dn^2 - d

    sorry but it would be too hard to show you step by step however I would suggest that you ask a teacher. That way, you'll get more info on how to do it.

    sorry

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