5х=у+50 у=5х-50 у=5х-50 у=5х-50 х=15
-3,4х+2,6у=14 -3,4х+2,6(5х-50)=14 -3,4х+13х-130=14 9,6х=144 у=25
{5x-y=50|*2,6
{-3.4x+2,6y=14
+{13x-2,6=50
{-3,4x+2,6y=14
{9,6x=64
{5x-y=50
{x=
{5*-y=50
{-y=50-100/3(дробь)
{-y=
{y=
5х=у+50 у=5х-50 у=5х-50 у=5х-50 х=15
-3,4х+2,6у=14 -3,4х+2,6(5х-50)=14 -3,4х+13х-130=14 9,6х=144 у=25
{5x-y=50|*2,6
{-3.4x+2,6y=14
+{13x-2,6=50
{-3,4x+2,6y=14
{9,6x=64
{5x-y=50
{x=
{5*-y=50
{x=
{-y=50-100/3(дробь)
{x=
{-y=
{x=
{y=