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24 March, 21:37

Foster's answer to the question he wrote for Ranger was 7x + (-3), while Ranger's answer was 7x - 3. They both checked their work by letting x = 5, and they both claim to be correct. Are they both correct? Explain.

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  1. 24 March, 22:03
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    Both Foster and Ranger are correct because subtracting 3 is the same as adding - 3. If you let x = 5 in either of the expressions, you get the answer 32.
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