А) (a-16)-(9+a)= а-16-9-а= -25
Б) (p-37)-(37+p)= р-37-37-р= -74
В) (a+b)-(p+a)= а+b-p-a= b-p
Г) (-t-k)-(t+k)= -t-k-t-k= -2t-2k= -2(t+k)
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А) (a-16)-(9+a)= а-16-9-а= -25
Б) (p-37)-(37+p)= р-37-37-р= -74
В) (a+b)-(p+a)= а+b-p-a= b-p
Г) (-t-k)-(t+k)= -t-k-t-k= -2t-2k= -2(t+k)