Предмет: Математика, автор: mexdieva07

Помогите пожалуйста. Не могу решить☺❤❤❤

Приложения:

Ответы

Автор ответа: dsahramanan

Ответ:

1. Ответ: 3,9

2. Ответ: 0,09

3. Ответ: 2

4. Ответ: 2,9

dsahramanan: Рад помочь. Я сразу узнал сайт фоксфорд))

mexdieva07: Спасибо, да фоксфорд☺☺☺

Автор ответа: karenina20044

Ответ:

Пошаговое объяснение:

1)x+2,4=6,3

x=6,3-2,4

х=3,9

2)(у+0,12)*16=3,36

16у=3,36-1,92

16у=1,44

у=1,44:16

у=0,09

3)6,5а-2,7а+4,5=12,1

3,8а+4,5=12,1

3,8а=12,1-4,5

3,8а=7,6

а=7,6:3,8

а=2

4)7,8-(2,4+b)=2,5

7,8-2,4+b=2,5

b=2,5+2,4-7,8

b=-2,9

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