Предмет: Алгебра, автор: wiskaskot06

помогите решить задания под номером 4,5​

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Автор ответа: vikaleev2003
1

4. 2х-7/6-х+1/9=1

6х-21-(2х+2)=18

6х-21-2х-2=18

4х=18+21+2

4х=41

х=41:4=1,25

5. {у-2х=х

{у=2х

2х-2=х

2х-х=2

х=2

у=2×2=4

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