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George and Bella are asked to solve −3x − 30 = 5x + 18. Identify where one of them made an error
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Oct 4, 2018
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George and Bella are asked to solve −3x − 30 = 5x + 18. Identify where one of them made an error
Mathematics
high-school
Matthew Ratzloff
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The first one is correct.(x = -6) The second one is incorrect because they subtracted -3x to both sides when they were supposed to ADD it.
Matt Canty
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Oct 7, 2018
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George and Bella are asked to solve −3x − 30 = 5x + 18. Identify where one of them made an error. George Bella − 3x − 30 = 5x + 18 − 3x − 30 − 5x = 5x + 18 −5x −8x − 30 = 18 − 8x − 30 + 30 = 18 + 30 −8x
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