Karen L.

asked • 05/09/14

rational expressions without a common denominator

2/x + 2/3=1
first i have to get a common denominator,yes? which would be 3x...so its 6/3x+2x/3x=1now i am lost

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Inactive Tutor answered • 05/09/14

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No, you do not need a common denominator.  Simply subtract the 2/3 to get 2/x=1-(2/3) so 2/x=1/3.  Cross multiply (2x3=6) and divide by 1 so x=6
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Karen L.

Thanks,Keith!
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05/09/14

Inactive Tutor

If you like common denominator:
 
2/ X + 2/3 =1
 
6/3X + 2X/3X = 1
 
6 + 2X = 3X
 
 It is more work.
 
  X =6
 
  -3X = 6 
 
    X = -2
 
  
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05/09/14

Inactive Tutor

Last 2 lines were left overs, ignore them.
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05/09/14

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