1) 5a + 27a – a = (5 + 27 – 1)a = 31a
2) 12b – 17b – b = (12 – 17 – 1)b = –6b
4) –8 – y + 17 – 10y = (–8 + 17) + (–1 – 10)y = 9 – 11y
5) 13a + 2b – 2a – b = (13 – 2)a + (2–1) b = 11a + b
7) 41x – 58x + 6y – y = (41 – 58)x + (6 – 1)y = –17x + 5y
8) 7,5x + y – 8,5x – 3,5y = (7,5 – 8,5)x + (1 – 3,5)y = –x – 2,5y
10) 3,5b – 2,4c – 0,6c – 0,7b = (3,5 – 0,7)b + (–2,4 – 0,6)c = 2,8b – 3c
11) 27p + 14q – 16p – 3q = (27 – 16)p + (14 – 3)q = 11p + 11q
1) 5a + 27a – a = (5 + 27 – 1)a = 31a
2) 12b – 17b – b = (12 – 17 – 1)b = –6b
4) –8 – y + 17 – 10y = (–8 + 17) + (–1 – 10)y = 9 – 11y
5) 13a + 2b – 2a – b = (13 – 2)a + (2–1) b = 11a + b
7) 41x – 58x + 6y – y = (41 – 58)x + (6 – 1)y = –17x + 5y
8) 7,5x + y – 8,5x – 3,5y = (7,5 – 8,5)x + (1 – 3,5)y = –x – 2,5y
10) 3,5b – 2,4c – 0,6c – 0,7b = (3,5 – 0,7)b + (–2,4 – 0,6)c = 2,8b – 3c
11) 27p + 14q – 16p – 3q = (27 – 16)p + (14 – 3)q = 11p + 11q