Odpowiedzi

2010-03-23T18:41:06+01:00
Czyli :
x=5+y
3(5+y) + 4y=8

x=5+y
15+3y+4y=8

x=5+y
7y=-7

x=5+y
y=-1

y=-1
X=4

;)
2010-03-23T19:20:58+01:00
{x-y=5
{3x+4y=8

{x = 5 + y
{3*(5 + y) + 4y = 8


{x = 5 + y
{15 + 3y + 4y = 8

{x = 5 + y
{7y = - 7 | :7

{x = 5 + y
{y = - 1

{x = 5 + (-1) = 4
{y = -1




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