How do you solve the inequality #6(2z+3)<=-54#?

1 Answer
EZ as pi
May 10, 2016

#z <= -6#

Explanation:

Treat it the same way as an equation, except....

  • If you multiply or divide by a negative number the inequality sign changes around.
  • If there is one fraction on each side and you invert them, the inequality sign changes around.
  • DO NOT cross multiply

#12z + 18 <= -54#

#12z <= -54 -18

#12z <= -72" now divide by 12"#

#z <= -6#

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