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17-11-2014
Mathematics

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a student claims that the inequality 3x+1>0 is always true because multiplying a number by 3 and then adding 1 to the result always produces a number greater than 0. explain the student's error

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17-11-2014

If you multiply 3 by -1 and add 1 it'll be a -2 which is less than zero.

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