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Subtract and simplify. `7/( x-7)-8/( x+7)`
`105/( x-7)`
`(-x+105)/(x^2-49)`
`(-x-105)/(x^2-49)`
`(105 x-1)/(x^2-49)`
`105/(x^2-49)`
Box 1:
Select the best answer
`(-x+105)/(x^2-49)`
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