у=6х+1; 2х-3(6х+1)=-11
2х-18х-3=-11
-16х=-11+3
-16х=-8
х=8/16
х=1/2
у=6*1/2+1=4
(1/2;4)
{ 6x-y=-1 {-у= -1-6х {у=1+6х
{ 2x-3y=-11 { 2x-3y=-11 { 2x-3(1+6х)=-11
2x-3(1+6х)=-11 | {х=0.5 {х=0.5
2х-3-16х=-11 | {у=1+6х {у=4
-16х=-11+3 |
-16х=-8 |
16х=8 |
х=0.5 |
ответ: (0.5; 4).
