Предмет: Математика, автор: genchonka

У мальчика тетрадей в клетку на 15 больше чем в линейку. С-ко у него всего тетрадей если тетрадей в клетку в 4 раза больше чем в линейку. Помогите кто-нибудь решить

Ответы

Автор ответа: Нови4оКк
0

x - в линейку

x+15 - в клетку

x+15=4x

15=3x

3x=15

x=5 - в линейку

2)5+15= в клетку

Ответ: 5 - в линейку ; 20 - в клетку.

Автор ответа: Nikita150803
0

Х - тетрадей в линейку

Х + 15 =  4Х  - тетрадей в клетку

15 = 4Х - Х

15 = 3Х

Х = 15 : 3

Х = 5 - тетрадей в линейку

5 + 15 = 20 - тетрадей в клетку

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How a lot of / many students are there in your class?

Did you get a lot of / much birthday presents?
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Ex.3. Complete the text with where, which or who.

There is a teacher 1____________________ is really cool. His name is Mr. Jackson. He’s the only teacher 2__________________doesn’t own a car. He rides a really old bike 3_________________ you can hear from miles away! He says he’s trying to save the planet. I try to do things 4__________________ help the environment, too. At school I speak to students 5_______________leave their rubbish in the wrong places. I say to them. There are recycling bins 6______________ you can put your old cans and paper. I want to live in a place 7____________ there isn’t rubbish everywhere. There is only one world 8_________________ we can live in, so we must look after it!