Раскройте скобки и подобные слагаемые:
1) -3q - (8p-3q)
2) (2+3a)+(7a-2)
3) - (11 a + b) - (12a - 3b)
4)a+(a-10)- (12a - 3b)
5)(6x - 8) - 5x-(4-9x)

1) -3q - (8p - 3q) = -3q - 8p + 3q = -8p

2) (2 + 3a) + (7a - 2) = 2 + 3a + 7a - 2 = 10a

3) - (11a + b) - (12a - 3b) = -11a - b - 12a + 3b = -23a + 2b

4) a + (a - 10) - (12a - 3b) = a + a - 10 - 12a + 3b = -10a + 3b - 10

5) (6x - 8) - 5x - (4 - 9x) = 6x - 8 - 5x - 4 + 9x = 10x - 12