a) 8m-3a+m-2a = 9m - 5a
б) 6b-(2+3b) = 6b - 2 - 3b = 3b - 2
в) -3(x+5)+6(x-2) = -3x - 15 + 6x - 12 = 3x - 27
a) 8m-3a+m-2a = 9m - 5a
б) 6b-(2+3b) = 6b - 2 - 3b = 3b - 2
в) -3(x+5)+6(x-2) = -3x - 15 + 6x - 12 = 3x - 27