Предмет: Математика, автор: даданет

Помогите пожалуйста решить примеры с-0,8с-1/5с-1/2с; 0,3а-0,2b-0,7a+0,2b
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Ответы

Автор ответа: inessa0865
0
1)   = с- 0,8с - 0,2с - 0,5с = с - 1,5с = -0,5с
2)   = -0,4а 
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