Odpowiedzi

2009-12-30T17:16:32+01:00
X=y-5
z=y+1
z=3x

3x=y+1
x=y-5

2x=6
x=3
z=9
y=3+5=8
2009-12-30T17:27:08+01:00
{x=y-5
{y+1=3x

{x=y-5
{y+1=3(y-5)

{x=y-5
{y+1=3y-15

{x=y-5
{y-3y=-15-1

{x=y-5
{-2y=-16/:(-2)

{x=y-5
{y=8

{x=8-5
{y=8

{x=3
{y=8