anonymous
  • anonymous
Solve for x: −2x − 4 > 8 x < −6 x > −6 x < −2 x > −2
Algebra
chestercat
  • chestercat
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anonymous
  • anonymous
What do you think it is? Then I will help you.
anonymous
  • anonymous
c
anonymous
  • anonymous

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anonymous
  • anonymous
Ok. So lets get started! First we must get x alone and the numbers alone. (Think of this. X hates friends/numbers. Numbers love other numbers.) So we must get rid of all the numbers that are near X so we get rid of 4. (GOLDEN RULE: WHAT YOU DO TO ONE SIDE YOU MUST DO TO THE OTHER.) |dw:1442273316056:dw| This makes -2x > 10 What do we do next?
anonymous
  • anonymous
−2x − 4 > 8 Isolate x on one side. So we need to move 4 over. Since it's a negative number, we have to add it (Add on BOTH sides). -2x -4 > 8 + 4 +4 -4 + 4 = 0 8 + 4 = 12 Now we have: -2x > 12 We need to divide each side by -2 now to isolate x. -2x/-2 > 12 Before dividing, see if the number is a negative or positive. 2 is negative so we need to SWITCH the inequality sign because we're dividing by a negative. So, this > becomes <. x < -6. <---- Answer. (:
anonymous
  • anonymous
^ Is right :P She finished it first.

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