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2010-03-14T16:02:34+01:00
{2(x-1)=y
{3x+2y=10

2x-2=y
3x+2y=10

2x-u=2/*2
3x+2y=10

4x-2y=4
3x+2y=10

7x=14/7

x=2
2010-03-14T16:03:34+01:00
2(x-1) = y
3x+2y = 10

2x-2 = y
3x+2y = 10

y = 2x-2
3x+2(2x-2) = 10

y = 2x-2
3x+4x-4 = 10

y = 2x-2
7x = 10+4

y = 2x-2
7x = 14 |:7

y = 2x-2
x = 2

y = 2*2-2 = 2
2010-03-14T16:06:54+01:00
{2(x-1)=y
{3x+2y=10

{2x-2=y
{3x+2y=10

{2x=y+2 |:2
{3x+2y=10

{x=0,5y+1
{3x+2y=10

{x=0,5y+1
{3(0,5y+1)+2y=10

{x=0,5y+1
{1,5y+3+2y=10

{x=0,5y+1
{3,5y=7 |:3,5

{x=0,5y+1
{y=2

{x=0,5*2+1
{y=2

{x=1+1
{y=2

{x=2
{y=2