Упростите выражения: 1)(-5m+4k)-(4m-7k)-8m; 2)(4n-3)-(7-5n)-8.. Created by fatima18112004. matematika-ru

(-5m+4k)-(4m-7k)-8m = -5m + 4k - 4m + 7k - 8m = -17m + 11k (4n-3)-(7-5n)-8 = 4n - 3 - 7 + 5n - 8 = 9n - 18 = 9(n-2)