SOLUTION: D = C – s (for s) n

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Question 65176: D = C – s (for s)
n

Answer by mszlmb(115)   (Show Source): You can put this solution on YOUR website!

We want to get the S variable isolated (alone-ified) on one side of the equation. First, we move the N. To move the N, multiply both sides by it. We do this because (C-S) is all divided by N, and the only way to subtract C so we can get S is to first multiply by their dividend, N.

so times N to both sides:
=>

See that, we've almost got S by itself! Now to get rid of that pesky little 'C.' Simply subtract both sides by C!

=>

We're done! almost finished: We have to rid ourself of the 'negative' sign! We know that -S is the same as saying -1 times S [-1*S], so we multiply both sides by -1, since -1*-1=1:

=> S is isolated! We're FINALLY DONE!!! almost there.. We just have to distribute the '-' on the left:

=> Recall that -(-x)= a positive x, so
We can optionally arrange this to our liking,
. There, it's a simple as that! Ask any questions you need to.

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