1) не знаю :(
2(A) -(2a+5c)+(3c-2a)
-2a+5c+3c-2a
-4a-5c+3c
-4a-2c
2.(Б) k-(k+m)
k-k-m
-m
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Answers & Comments
1) не знаю :(
2(A) -(2a+5c)+(3c-2a)
-2a+5c+3c-2a
-4a-5c+3c
-4a-2c
2.(Б) k-(k+m)
k-k-m
-m