{3x - y=1
2x-3y =-14
{y=-1+3x
x-3y=-14
x-3(-1+3x)=-14
x=17/8
y=-1+3*17/8
y=42/8
(x,y)=(17/8,43/8)
{3*17/8-43/8=1
17/8-3*43/8=-14
{1=1
-14=-14
Объяснение:
{3x - y=1
2x-3y =-14
{y=-1+3x
x-3y=-14
x-3(-1+3x)=-14
x=17/8
y=-1+3*17/8
y=42/8
(x,y)=(17/8,43/8)
{3*17/8-43/8=1
17/8-3*43/8=-14
{1=1
-14=-14
(x,y)=(17/8,43/8)
Объяснение: