Try another version of this question Subtract and simplify. `10/( x-9)-7/( x+9)` `(3 x+153)/(x^2-81)` `153/(x^2-81)` `153/( x-9)` `(153 x+ 3)/(x^2-81)` `(3 x-153)/(x^2-81)` Box 1: Select the best answer `(3 x+153)/(x^2-81)`
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Box 1: Select the best answer