y=-3x+2 и y=8x-9
-3х+2=8х-9
-11x=-11
x=1
y=-3*1+2=-1
(x,y)=(1,-1)
{у=-3х+2
{у=8х-9
2+9=8х+3х
11=11х
х=1
у=-3+2= -1
ответ: х=1; у= -1.
y=-3x+2 и y=8x-9
-3х+2=8х-9
-11x=-11
x=1
y=-3*1+2=-1
(x,y)=(1,-1)
{у=-3х+2
{у=8х-9
-3х+2=8х-9
2+9=8х+3х
11=11х
х=1
у=-3+2= -1
ответ: х=1; у= -1.