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Why do they use (x-1) instead of x, why?
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Why do they use (x-1) instead of x, why?

Why do they use (x-1) instead of x, why?-example-1
User Step
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if it was just x it would mean that they would be an invisible 1 in front of the x. if it's (x-1) it would be another number that it be subtracted from the x
User MarkPowell
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