Question

(3m-4n)+(5m+3n)+n-7
Упростите выражение.

Answer 1

3m-4n+5m+3n+n-7
8m+0-7
8m-7

Answer 2

   (3m - 4n) + (5m + 3n) + n - 7 = 3m - 4n + 5m +3n + n - 7 =
= 8m - 4n + 4n - 7 = 8m - 7