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posted by Anonymous on Tuesday, September 4, 2012 at 3:36pm.

3-x=12(x-1)

clear parens: 3-x = 12x - 12 add x+12 to both sides: 3-x+x+12 = 12x-12 + x+12 15 = 13x divide by 13 15/13 = x

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