Example

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

Question

$$\frac { a } { 2 x + 1 } + \frac { 1 } { x + 2 } = \frac { 4 x + 5 } { 2 x ^ { 2 } + 5 x + 2 }$$

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