Вопрос школьника по предмету Алгебра
Пожалуйста решите
-(10,5-(-2,8-(3-7)))
Ответ учителя по предмету Алгебра
-(10,5-(-2,8-(3-7)))
Перед скобками стоит знак минус, значит все знаки в скобках меняются на противоположные. -(10,5+(-2,8+(3+7))) = -(10,5 + (-2,8+10)) = -10,5 + 7,2 = -3,3.
Если что-то не так, подправьте.
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