Предмет: Алгебра, автор: astgames

Решите систему уравнений:
a=5
2a-b=21

Ответы

Автор ответа: TSevka
1

Ответ:

2*5-b=21

10-b=21

-b=21-11

-b=11

b=-11

Предыдущий вопрос
Следующий вопрос
Похожие вопросы
Предмет: Английский язык, автор: CreepyChan

USE THE ARTICLE:

A \ Lots of people live in...India . b\ ... Vladivostok is in... Far East of ... Russia . c\ ... Times Square is the geographical centre of ... New York . d\ ...Red Square is in the centre of ... Moscow e\... Volga runs intro ... Caspian Sea . f\ My friend goes to ... Canary Island . g\ Which river flows through ... London ? - ... Thames . h\ There are seven continents on ... Earth 
1 год назад
Предмет: Русский язык, автор: тоер
сочинение на тему поход в театр
1 год назад
Предмет: Английский язык, автор: sonik96

ПОМОГИТЕ ПОЖАЛУЙСТА ПЕРЕВЕСТИ ТЕКСТ:

Probably no story is better know all over the world than that of Robinson Crusoe. But we must remember that it is not a true story. It was imagined and written years ago by an englishman named Daniel Defoe. He was the first man to tell story in such a way as to make people believe it to be true. Although the adventure of Robinson Crusoe are imaginary, they might have happened in real life.

At the beginning of his story, Robinson Crusoe tells us that his father wanted him to become a lawyer, but that he himself wanted to become a sailor. His father, a wise and rather stern man, gave him serious advice, telling him that adventures abroad were best fitted either for rough and uneducated men or for men of superior fortune. 

But young Robinson found it impossible to take his father's advice. Without saying anything to his father or mother, he went away to sea. A few weeks later, he had his first experience of shipwreck, but ws resued, and made his way to London.

 
1 год назад
Предмет: Математика, автор: natusichkahl
У Никиты было 6 белых голубей, это в — в 2 раза меньше, чем серых. Сколько серых голубей у Никиты
8 лет назад
Предмет: Математика, автор: satas896
решите 24 , пажалоста дам 5 б
8 лет назад