Для решения уравнения необходимо найти значение переменной . Шаг 1: Изолируем переменную В данном уравнении число является уменьшаемым, — вычитаемым, а — разностью. Чтобы найти неизвестное вычитаемое, нужно из уменьшаемого вычесть разность: Шаг 2: Раскрытие скобок При вычитании отрицательного числа знак меняется на противоположный (минус на минус дает плюс): Шаг 3: Вычисление Чтобы сложить числа с разными знаками, нужно из большего модуля вычесть меньший и поставить знак того числа, модуль которого больше ( , значит результат будет отрицательным):
- Добавляем знак минус:
Ответ: Проверка Подставим найденное значение в исходное уравнение: Равенство верно. Хотите, чтобы я решил еще несколько подобных уравнений для закрепления материала?
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