а) [tex] \frac{5x - 15y}{x - 3y} = \frac{5(x - 3y)}{x - 3y} = 5 [/tex]
б) [tex] \frac{6cd - 18c}{5d - 15} = \frac{6c(d - 3)}{5(d - 3)} = \frac{6c}{5} [/tex]
а) [tex] \frac{5x - 15y}{x - 3y} = \frac{5(x - 3y)}{x - 3y} = 5 [/tex]
б) [tex] \frac{6cd - 18c}{5d - 15} = \frac{6c(d - 3)}{5(d - 3)} = \frac{6c}{5} [/tex]