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
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