Example

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

Question

$$\frac{x^{2}+x-2}{2-x}\le0$$

Solve for x

$x\in \begin{bmatrix}-2,1\end{bmatrix}\cup \left(2,\infty\right)$

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