Example

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

Question

$$\frac{ x+1 }{ x+2 } + \frac{ 1 }{ \frac{ x+1 }{ x+2 } }$$

Answer

(x+1)/(x+2)+(x+2)/(x+1)

Solution


Invert and multiply.
\[\frac{x+1}{x+2}+\frac{x+2}{x+1}\]
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