11n-(7n-1)-6n+8 при n=1611n-(7n-1)-6n+8 при n=16

11n-(7n-1)-6n+8 при n=16:11n - (7n - 1) - 6n + 8 = 11n - 7n + 1 - 6n + 8 = -2n + 9 = 9 - 2n;при n = 16:  9 - 2*16 = 9 - 32 = 23