tolong jawab besok kumpul jan pelit tau

[tex] \frac{1}{x} + \frac{1}{y} = \frac{y + x}{xy}[/tex]
[tex] \frac{3}{4x} + \frac{5}{6x} = \frac{9 +10 }{12x} = \frac{19}{12x} [/tex]
[tex] \frac{2n + 3}{m} + \frac{3 - 4n}{n} = \frac{ 2{n}^{2} +3n + 3m - 4mn }{mn} [/tex]
[tex] \frac{3y}{x} + \frac{x}{y} - \frac{2y}{z} = \frac{3 {y}^{2} z + {x}^{2} z - 2 x{y}^{2} }{xyz} [/tex]