Cevaplar

2012-11-28T22:17:17+02:00

2x=21-x ise

2x+x=21

3x=21 ise

x=7 olur.....

0
2012-11-28T22:17:38+02:00

2x=21-x

2x+x=21

3x=21

x=7

0