Hi

Note:  x^2-4 = (x-2)(x+2)

1/x-2 + 5/x+2 = 7x/x^2-4 |Multiplying thru by (x-2)(x+2)so as all denominators=1

 (x+2) + 5(x-2) = 7x

  6x - 8 = 7x

       -8 = x



CHECKING our Answer

 -1/10 -5/6 = -6/60 - 50/60 =  -56/60 

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