Question

Помогите решить.
-(-a+b)+(d-c) =
-m-(a-b)-n =
k-(-t+p-c-b) =
a-(c-l-f)+(+k-f+n) =
(a-b)-(c-d) =
- l - (a-+b)+k =
- t -(a-c + t + k) =
-b+(-a-c+f)-(-k-n+l) =

Answer 1

=a-b+d-c
=-m-a+b-n
=k+t-p+c+b
=