Предмет: Математика, автор: jiyangulberdimuratov

Объясните пожалуйста я не могу понять где ставить плюс или минус в уравнениях
256-(144+p)=112
...

Ответы

Автор ответа: bakunovich07

1

Ответ: 256-144-p=112

Пошаговое объяснение:

Здесь нужно опираться на правила раскрытия скобок. Если перед скобками стоит плюс, скобки раскрываются без изменения знаков. Если, как в этом случае, перед скобками стоит минус, знаки при раскрытии скобок меняются на противоположные. Таким образом, 144 после раскрытия скобок становится -144, p становится -p. Общее выражение будет выглядеть так: 256-144-p=112

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