Question

Сократите дробь
Заранее спасибо

Answer 1

$\displaystyle 1).. \frac{-14a^{8}b^{3}c^{5}}{-21a^{12}b^{4}c}= \frac{2}{3}*a^{8-12}b^{3-4}c^{5-1}= \frac{2}{3}*a^{-4}b^{-1}c^{4}= \frac{2c^{4}}{3a^{4}b}; \\ \\ \\ 2).. \frac{5n^{4}t^{3}p^{2}}{15n^{9}t^{2}p^{4}}= \frac{1}{3}*n^{4-9}t^{3-2}p^{2-4}= \frac{1}{3}*n^{-5}tp^{-2}= \frac{t}{3n^{5}p^{2}}; \\ \\ \\ 3).. \frac{ab-3a}{ab^{2}-3ab}= \frac{a(b-3)}{ab(b-3)}= \frac{1}{b};$