Odpowiedzi

2010-01-05T17:23:34+01:00
A. x=3
2*3+y=4
y=-2
b. x=1
1+y =2
y=1
c. x = 5-2y
3(5-2y) - y =1
15-6y-y=1
14=7y
y-2
d.x=-4-y
2(-4-y)-3y =2
-8-2y-3y=2
-10=5y
y=-2