SOLUTION: Solve equations by factoring (3r + 9)(r - 1) = -(21r - 21)

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Question 378836: Solve equations by factoring
(3r + 9)(r - 1) = -(21r - 21)
Answer by jsmallt9(3758) About Me  (Show Source):
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I solved this same problem earlier. Please click here to see the solution.