Question 174505
x - .20x = 12,590 {Let x represent the unknown original amount; subtract 20% of the original (x) price]

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.80x = 12,590 [Subtract the x-terms]
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({{{.80x/.80)}}} = ({{{12,590/.80)}}}  [ Isolate the x-term through division]
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x  = $15,737.50 [Original price]