1) 3,36a - 4,44a - 13 = a(3,36 - 4,44) - 13 = -1,08a - 13
2) 2,4a - 46,3 + 1,7 - 8b = 2,4a - 8b - 44,4 = 2 (1,2a - 4b - 22,2)
3) 6.5c + 30 - 6.5c - 71 = 30 - 71 = -41 (ескерту: 6.5c - 6.5c = 0)
4) 2.7d - 7.5 - 5d + 7.5 = d(2.7 - 5) = -2.3d (ескерту: 7.5 - 7.5 = 0)