हल करना ((a)^(2)-1)/((a)^(2)-2a-15)-(a+2)/(a+3) | Equatix - Math Solver

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Example

3(r+2s)=2t-4

a⋅(b-2)=3b

3(r+2s)=2t-4

a⋅(b-2)=3b

Question

$$\frac{ { a }^{ 2 } -1 }{ { a }^{ 2 } -2a-15 } - \frac{ a+2 }{ a+3 }$$