math

Solve by multiplication principle
-2x is greater than 1/9
answer: x is greater than -1/18

asked by deedee
  1. - 2 x > 1/9
    divide both sides by - 2 AND change direction of arrow
    x < -1/18
    when you multiply (divide) both sides of an inequality by a negative, you reverse the arrow

    posted by Damon
  2. Thank you

    posted by deedee
  3. Think about
    -x > 1
    that would be everything to the left of -1

    Now do the algebra, multiply both sides by -1 and reverse arrow:
    x < -1 sure enough

    posted by Damon

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