ответ:(5;1)
Объяснение:1/(x-y)=u,1/(x+y)=v
{4u+12v=3, 8u-18v=-1;
{-8u-24v=-6, 8u-18v=-1;
{-42v=-7,8u-18v=-1;
{v=1/6,u=1/4.
{ 1/(x-y)=1/4,1/x+y=1/6;
{x-y=4,x+y=6 ;
{x=5, y=1.
ответ:(5;1)
Объяснение:1/(x-y)=u,1/(x+y)=v
{4u+12v=3, 8u-18v=-1;
{-8u-24v=-6, 8u-18v=-1;
{-42v=-7,8u-18v=-1;
{v=1/6,u=1/4.
{ 1/(x-y)=1/4,1/x+y=1/6;
{x-y=4,x+y=6 ;
{x=5, y=1.