Question

Упрастите выражение
5b+9b
17d-4d
n+12n
3k-k+7k

Раскрыть скобки
5(х+11)
2(12n-m)
(4c+d)8y
6(p+3k-9t)

Answer 1

$5b+9b=14b \ 17d-4d=16d \ n+12n=13n \ 3k-k+7k=9k \\ 5(x+11)=5x+55 \ 2(12n-m)=24n-2m \ (4c+d)8y=32cy+8dy \ 6(p+3k-9t)=6p+18k-54t$