Odpowiedzi

2010-03-10T15:30:47+01:00
{3/5 x + 1/2 y = 2
{1/2 ( 2 x - y ) = 2

{3/5 x + 1/2y = 2
{x - 1/2 y = 2
+_____________
8/5 x = 4
8x=20
x=2,5

3/5 x + 1/2 y = 2
(3/5 * 2,5) + 1/2 y =2
1,5 +1/2 y =2
1/2 y = 0,5
y= 1

{x= 2,5
{y= 1
2010-03-10T15:32:30+01:00
3/5 x + 1/2 = 2
1/2 ( 2 x - y ) = 2

3/5 x + 1/2 = 2
x- 1/2 y = 1

3/5 x = 1.5 *5/3
x- 1/2 y = 1

x = 2.5
x- 1/2 y = 1 +
===========
1/2y=3.5 *2
y=7

x=2.5
y=7