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OpenStudy (jenniferjuice):
Anna and Belle are asked to solve −2x − 15 = 6x + 9. Identify where one of them made an error
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OpenStudy (jenniferjuice):
OpenStudy (kirbykirby):
Belle made the error when she added +9. If you notice the next step, 9+9 should give 18 but instead it disappeared
OpenStudy (kirbykirby):
she should have subtracted the 9 to get rid of it
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