anonymous
  • anonymous
7-9x<12
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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mathstudent55
  • mathstudent55
You can solve an inequality the same way you solve an equation with one difference. When you multiply or divide both sides by a negative number, the inequality sign changes direction.
mathstudent55
  • mathstudent55
You want to isolate x. That means you need to get rid of the 7 from the left side first. Step 1. Subtract 7 from both sides. What do you get?
anonymous
  • anonymous
-9x<5

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mathstudent55
  • mathstudent55
Great. Remember, we're trying to isolate x. Now I see that x is being multiplied by -9. We need x alone, so we need to divide both sides by -9. Remember the rule above that the inequality sign must flip when you multiply or divide by a negative number.
anonymous
  • anonymous
Great, thank you!
mathstudent55
  • mathstudent55
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mathstudent55
  • mathstudent55
|dw:1436149680985:dw|
mathstudent55
  • mathstudent55
You're welcome.

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