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28 February, 18:51

The number 5 is one of the solutions for the inequality 3x < 21.

True

False

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Answers (2)
  1. 28 February, 18:58
    0
    To find the answer, plug in 5 into the inequality.

    3 (5) <21

    15<21

    Since 15 is less than 21, we know that 5 is a solution.
  2. 28 February, 20:45
    0
    Lets see ...

    3 (5) < 21

    15 < 21 ... so is 15 less then 21 ... yes ... so 5 is a solution
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