sederhanakan bentuk aljabar dari x/x+y/y/x-y

[tex] \frac{x}{x + y} \div \frac{y}{x - y} \\ = \frac{x}{x + y} \times \frac{x - y}{y} \\ = \frac{x(x - y)}{(x + y)y} \\ = \frac{ {x}^{2} - xy }{xy + {y}^{2} } [/tex]