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12 July, 19:52

Andrea was given the following equation to solve, 5x - 2 = 2x + 7, she decided to combine the 5x and 2x on the left side, leaving her with 7x - 2 = 7, explain to andrea the minor error she made by combining 5x and 2x to make 7x in this situation.

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  1. 12 July, 23:27
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    When she decided to combine the 5x and 2x she would have been subtracting the 2x leaving her with 3x-2=7which is 3x=9, x=3
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