5p−4q+8−3(9p−1+8q+2r)−2(3r−5p+4)+6r=

Question

5p−4q+8−3(9p−1+8q+2r)−2(3r−5p+4)+6r=

Answer 1

-12p-28q+3-6r вот ответ 

Answer 2

1)убираем скобки
5р-4q+8-27p+3-24q-6r-6r+10p-8+6r
2)взаимоуничтожаем
-12p-28q+3-6r