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posted by Isabella on Friday, March 15, 2013 at 8:11pm.
Peter solved this equation 6 x y = 490 - 4 6 x y = 486 y = 492 Explain his mistake.
He removed the 6 from the 6 times y side and added 6 to the 486 on the other side. He should have divided both sides by 6.
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