Question

x+2y=3 2y+3z=4 3z+x=5

Answer 1

{x+2y=3
{2y+3z=4
{3z+x=5

{3z-2y=2
{2y+3z=4

{6z=6
z=1

{3+x=5
x=2
{2+2y=3
y=0.5

Ответ
x=2,
y=0.5,
z=1