1) = (1,3а + 4,6а) — 2 = 5,9а — 2
2) = (5,7а — а) — 8 = 4,7а — 8
3) = (10,2b — 5,3b) — 6 = 4,9b — 6
4) = (7 — 3,8) — 9b = 3,2 — 9b
5) = (10 — 3) — 4,9c = 7 — 4,9c
6) = (15c — 2,9c) + 3 = 12,1c + 3
1.5,9а-2
2.4,7а-8
3.4,9б-6
4.3,2-9б
5.7-4,9c
6.12,1c+3