Odpowiedzi

2010-04-07T00:10:06+02:00
Y=2x-3/7
-2x=y-3/7 /÷(-2)
x=-0,5y+3/14

{y=2x-3/7
{x=-0,5y+3/14
{y=2×(-0,5+3/14)-3/7
{x=-0,5y+3/14
{y=-1+6/14-6/14
{x=-0,5y+3/14
{y=-1
{x=-0,5y+3/14
{y=-1
{x=7/14+3/14
{y=-1
{x=5/7