Odpowiedzi

2010-03-08T21:18:23+01:00
3x-2(x-4)=11
y=x-4
3x-2x+8=11
y=x-4
x=3


x=5-y
x+2y=15
x=5-y
5-y+2y=15
y=10
Najlepsza Odpowiedź!
2010-03-08T21:21:17+01:00
C.{3x-2(x-4)=11
{y=x-4

{3x-2x+8=11
{y=x-4

{x=11-8
{y=x-4

{x=3
{y= 3-4

{x=3
{y=-1

d. {x=5-y
{x+2y=15

{x=5-y
{5-y+2y=15

{x=5-y
{y=15-5

{x=5-y
{y=10

{x=5-10
{y=10

{x=-5
{y=10
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