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8n - 15 = 57 (add 15 to both sides)

8n - 15 + 15 = 57 + 15

8n = 72 (divide both sides by 8)

8n/8 = 72/8

n = 9

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โˆ™ 2010-01-15 21:56:38
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Q: If 15 is subtracted from a certain number 8 times and the differene is 57 what is the number?
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