Odpowiedzi

2009-05-26T17:41:28+02:00
{6x+5,4y=178,8
{6x+6y=186 |:6

{6x+5,4y=178,8
{x+y=31

{6(31-y)+5,4y=178,8
{x=31-y

{186-6y+5,4y=178,8
{x=31-y

{-6y+5,4y=178,8-186
{x=31-y

{-0,6y=-7,2 |:(-0,6)
{x=31-y

{y=12
{x=31-12

{y=12
{x=19


2009-05-26T17:41:40+02:00
{6x+5,4y=180-1,2
{6(x+y)=180+6

{6x+5,4y=178,8
{6x+6y=186 / ×(-1)

{6x+5,4y=178,8
{-6x-6y=-186
------------------
6x+5,4y-6x-6y=178,8-186
5,4y-6y=-7,2
-0,6y=-7,2 / ÷(-0,6)
y=12

6x+6×12=186
6x+72=186
6x=186-72
6x=114 / ÷6
x=19

{x=19
{y=12