{1у-2х=6
{у+2х=10
{y =10-2x
1(10 - 2x) - 2x = 6
10 - 2x - 2x = 6
10 - 4x = 6
-4x = 10 - 6
-4x = -4
x = 1
y = 10 - 2 × 1
y = 10 - 2
y = 8
{1×8 - 2×1 = 6
{8 + 2×1 = 10
{6 = 6
{10 = 10
Получается... (x; y) = (1; 8)
{1у-2х=6
{у+2х=10
{1у-2х=6
{y =10-2x
1(10 - 2x) - 2x = 6
10 - 2x - 2x = 6
10 - 4x = 6
-4x = 10 - 6
-4x = -4
x = 1
y = 10 - 2 × 1
y = 10 - 2
y = 8
{1×8 - 2×1 = 6
{8 + 2×1 = 10
{6 = 6
{10 = 10
Получается... (x; y) = (1; 8)