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15 February, 01:53

What is 6 more than 5 times a number (x) is at least 21

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  1. 15 February, 02:02
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    Six more than five times a number is at least twenty one is set up like this:

    6 + 5x ≥ 21

    By subtracting six from both sides you're left with 5x ≥ 15

    Divide five from both sides to isolate the variable and you're done.

    x ≥ 3 (By being greater or equal to three x can be 3, 4, 5, 6, etc.)
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