Сократите дробь:
а) $\frac{5(x - y)}{15(y - x)}$;
б) $\frac{150a^2b^3(z - t)}{300ab^5(t - z)}$;
в) $\frac{2(m - n)}{a(n - m)}$;
г) $\frac{13x^3y^4z^5(c - d)}{26xy^5z^7(d - c)}$.
$\frac{5(x - y)}{15(y - x)} = -\frac{5(x - y)}{15(x - y)} = -\frac{5}{15} * \frac{x - y}{x - y} = -\frac{1}{3}$
$\frac{150a^2b^3(z - t)}{300ab^5(t - z)} = -\frac{150a^2b^3(z - t)}{300ab^5(z - t)} = -\frac{150}{300} * \frac{a^2}{a} * \frac{b^3}{b^5} * \frac{z - t}{z - t} = -\frac{a}{2b^2}$
$\frac{2(m - n)}{a(n - m)} = -\frac{2(m - n)}{a(m - n)} = -\frac{2}{1} * \frac{1}{a} * \frac{m - n}{m - n} = -\frac{2}{a}$
$\frac{13x^3y^4z^5(c - d)}{26xy^5z^7(d - c)} = -\frac{13x^3y^4z^5(c - d)}{26xy^5z^7(c - d)} = -\frac{13}{26} * \frac{x^3}{x} * \frac{y^4}{y^5} * \frac{z^5}{z^7} * \frac{c - d}{c - d} = -\frac{x^2}{2yz^2}$
Пожауйста, оцените решение
