Question

-3/4(1/3m+n)-1/4(3m+n)

Answer 1

$-3/4(1/3m+n)-1/4(3m+n)$

Answer 2

-3/4*1/3m-3/4*n-1/4*3m-1/4*n=-1/4m-3/4n-3/4m-1/4n=-4/4m-4/4n=-m-n
Рад помочь!