Предмет: Математика, автор: сифани

решите пожалуйста уравнение!
x-3(x+9)=3

Ответы

Автор ответа: Milena17
1
х-3(х+9)=3
х-3х-27=3
-2х=3+27
-2х=30
-х=30:2
-х=15
х=-15
Проверка:
-15-3(-15+9)=3
      -15-3·(-6)=3
          -15+18=3
                    3=3
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