Odpowiedzi

2010-02-01T14:20:53+01:00
2(3-2y)-(y+5)=16
6-4y-y-5=16
-5y=16-6+5
-5y=15/-5
y=-3
1 5 1
2010-02-01T14:31:01+01:00
2(3-2y)-(y+5)=16
6-4y-y-5=16
-5y=16+5-6
-5y=10+5
-5y=15/:(-5)
y=-3
2010-02-01T15:05:53+01:00
2(3-2y)-(y+5)=16
6-4y-y-5=16
1-5y=16
5y=15 |:5
y=3