waecmaths question:
Solve for x in the equation $\frac{1}{x}+\frac{2}{3x}=\frac{1}{3}$
Option A:
5
Option B:
4
Option C:
3
Option D:
1
waecmaths solution:
$\begin{align} & \frac{1}{x}+\frac{2}{3x}=\frac{1}{3} \\ & \frac{3+1}{3x}=\frac{1}{3} \\ & \frac{4}{3x}=\frac{1}{3} \\ & x=4 \\\end{align}$
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