Try another version of this question Subtract and simplify. `11/( x-1)-4/( x+1)` `15/(x^2-1)` `(7 x+15)/(x^2-1)` `(15 x+ 7)/(x^2-1)` `15/( x-1)` `(7 x-15)/(x^2-1)` Box 1: Select the best answer `(7 x+15)/(x^2-1)`
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Box 1: Select the best answer