Tuesday, 25 June 2013

INEQUALITIES - 1



Find x in the following inequality. 48 – 6x ≤ 72

Solution

48 – 6x ≤ 72

48-48 – 6x ≤72-48    subtracting 48 on both sides.

0 – 6x ≤ 24

-6x ≤ 24

-6x ≥ 24
-6      -6

x  ≥ -4  The inequality sign changes because x has changed from negative to positive.

Hence x  ≥ -4



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2 comments:

  1. Unknown27 June 2013 at 21:47

    -6x ≤ 24

    -6x ≥ 24
    but how
    -6 -6
    why not -4 answer for this ineqality

    ReplyDelete
  2. IVAN8 October 2014 at 18:21

    Here I have divided by (-6) both sides.

    ReplyDelete

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