10. $$\frac{6x+y}{3x}$$ - $$\frac{5y^2}{x^2}$$ $$\cdot$$ $$\frac{x}{15y}$$ = $$\frac{6x+y}{3x}$$ - $$\frac{5xy^2}{15x^2y}$$ = $$\frac{6x+y}{3x}$$ - $$\frac{y}{3x}$$ = $$\frac{6x+y-y}{3x}$$ = $$\frac{6x}{3x}$$ = 2
Ответ: 2