помогите пожалуйста.
8b+4b-7b=
2.9c+3c-10c=
7-3.8b-9b=
15c+3-2.9c=
-5c+(13-6c)=
8b+4b-7b=
2.9c+3c-10c=
7-3.8b-9b=
15c+3-2.9c=
-5c+(13-6c)=
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Answers & Comments
2.9c+3c-10c= -4.1c
7-3.8b-9b= 7 - 12.8b
15c+3-2.9c= 12.1c + 3
-5c+(13-6c)= -5c + 13 - 6c = 13 - 11c
2,9c+3c-10c= (2,9+3-10)c=-4,1c
7-3,8b-9b= 7-12,8b
15c+3-2,9c=12,1c+3
-5c+(13-6c)=-5c+13-6c=-11c+13