You can put this solution on YOUR website! v/ (v+8)+ 1/ (v-13) =1
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Multiply thru by (v+8)(v-13) to get:
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v(v-13) + (v+8) = (v+8)(v-13)
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v^2 - 13v + v + 8 = v^2 - 5v - 104
7v = 112
v = 16
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Cheers,
Stan H.