waecmaths question:
Simplify $\frac{2}{3xy}-\frac{3}{4yz}$
Option A:
$\frac{2-x}{12xyz}$
Option B:
$\frac{2z-3x}{12xyz}$
Option C:
$\frac{4z-3x}{12xyz}$
Option D:
$\frac{8z-9x}{12xyz}$
waecmaths solution:
$\frac{2}{3xy}-\frac{3}{4yz}=\frac{8z-9x}{12xyz}$
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