y=3-3x
2х-9+9х=-7
11х=2
х=2/11
у=3-6/11=(33-6)/11=27/11
у=3-3х
2х-3(3-3х)=-7
2х-9(1-х)=-7
2х-9+9х+7=0
11х-2=0
у=3-3*2\11=33\11-6\11=27/11
y=3-3x
2х-9+9х=-7
11х=2
х=2/11
у=3-6/11=(33-6)/11=27/11
у=3-3х
2х-3(3-3х)=-7
2х-9(1-х)=-7
2х-9+9х+7=0
11х-2=0
11х=2
х=2/11
у=3-3*2\11=33\11-6\11=27/11