Odpowiedzi

2010-03-03T14:51:48+01:00
2x - y = 10
x + 5y = -17
2x-y=10
x=-5y-17
2*(-5y-17)-y=10
x=-5y-17
-10y-34-y=10
x=-5y-17
-11y=44 |:(-11)
x=-5y-17
y=4
x=-5*4-17
x=-27
1 5 1
2010-03-03T14:52:30+01:00
2x - y = 10
x + 5y = -17

2x-y=10
x=-5y-17

2*(-5y-17)-y=10
x=-5y-17

-10y-34-y=10
x=-5y-17

-11y=44
x=-5y-17

y=4
x=-5*4-17

y=4
x=-27
2010-03-03T14:54:08+01:00
2x - y =10
x + 5y = -17 /*(-2)

2x-y=10
-2x-10y=24
____________
-y-10y=34
-11y=34 //(-11)
y=-2

x+5*(-2)=-17
x=-17+10
x=27

y=-2
x=27