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4/x-3=x+5/5

Guest Mar 7, 2017
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I assume we have ;

 

4 / (x-3 ) = (x+5) / 5     cross-multiply

 

20  = (x - 3) ( x + 5)   simplify

 

20  = x^2 + 2x - 15    subtract 20 from both sides

 

0  = x^2 + 2x - 35       factor

 

0 = (x + 7) ( x - 5)      set both factors to 0   and x = -7   or x = 5

 

 

cool cool cool

CPhill  Mar 7, 2017

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