Предмет: Алгебра, автор: CTboo

Помогите!!!! Срочно!!!

Приложения:

Ответы

Автор ответа: hdjehbdx

Ответ:

а)8х-15,3=6х-3,3

8х-6х=-3,3+15,3

2х=18,6

х=9,3

б)18-(6х+5)=4-7х

18-6х-5=4-7х

-6х+7х=4-18+5

х=-9

в)6(х+0,5)-3=9

6х+3-3=9

6х=9

х=1,5

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