WAEC - Mathematics (2005 - No. 34)
Simplify: \(\frac{2}{3xy} - \frac{3}{4yz}\)
\(\frac{2-x}{12xyz}\)
\(\frac{2z-3x}{12xyz}\)
\(\frac{4z-3x}{12xyz}\)
\(\frac{8z-9x}{12xyz}\)
Vysvětlení
\(\frac{2}{3xy} - \frac{3}{4yz} = \frac{2(4)-3(3x)}{12xyz} = \frac{8z-9x}{12xyz}\)