anonymous
  • anonymous
2/x-1 = 3/x+2 . The answer is is 7 however I do not understand how they got this answer >:(
Mathematics
jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
Multiply throughout by x to get 2-x=3+2x => 3x=-1 => x=-1/3. The answer is not 7.
anonymous
  • anonymous
The answer could be 7. 2/(x-1) = 3/(x+2), x = 7. (2/x)-1 = (3/x)+2, x = -1/3.
anonymous
  • anonymous
for 2/(x-1) = 3/(x+2): cross multiply: 2(x+2) = 3(x-1) expand terms: 2x + 4 = 3x -3 add -3x -4 to both sides: -x = -7 divide by -1: x = 7

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anonymous
  • anonymous
hello
anonymous
  • anonymous
Hahaha. Quantish. I did not notice that.

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