11n-(7n-1)-6n+8 при n=16

Question

11n-(7n-1)-6n+8 при n=16

Answer 1

11n-7n+1-6n+8=-2n+9=-23

Answer 2

11n-(7n-1)-6n+8=11n-7n+1-6n+8=-2n+9=-2×16+9=-32+9=-23