Откройте скобки и решите: -3a+14-(5-2a) c(5-a-x) 3(-3a+6b) 4(3m-n) - 3(4m+2n) a+(2b-b-a+1) 2h-(a+b-3a-2)

-3a+14-(5-2a)  = -3a + 14 - 5 + 2a = -a + 9

c(5-a-x)  = 5c - ac - cx

3(-3a+6b)  = -9a + 18b

4(3m-n) - 3(4m+2n)  = 12m - 4n - 12m - 6n = -10n

a+(2b-b-a+1)  = a + 2b - b - a + 1 = b + 1

2h-(a+b-3a-2) = 2h - a - b + 3a + 2 = 2a + 2h + 2