Example

3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b

Question

$$\frac{ 5 }{ x+y } - \frac{ 2 }{ x-y } -1, \frac{ 15 }{ x+y } + \frac{ 7 }{ x-y } 10$$

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