Question 13

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waecmaths question: 

Simplify $\frac{2}{1-x}-\frac{1}{x}$ 

Option A: 

$\frac{x+1}{x(1-x)}$

Option B: 

$\frac{3x-1}{x(1-x)}$

Option C: 

$\frac{3x+1}{x(1-x)}$

Option D: 

$\frac{x-1}{x(1-x)}$

waecmaths solution: 

$\begin{align}  & \frac{2}{1-x}-\frac{1}{x}=\frac{2x-(1-x)}{x(1-x)} \\ & \frac{2}{1-x}-\frac{1}{x}=\frac{2x-1+x}{x(1-x)} \\ & \frac{2}{1-x}-\frac{1}{x}=\frac{3x-1}{x(1-x)} \\\end{align}$

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