Example

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

Question

$$X = \frac { 2 a + 3 } { 3 a - 2 } , \frac { X - 1 } { 2 X + 1 }$$

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