Cevaplar

2012-09-26T17:52:10+03:00

100A+20+B-100B-30-A:287

99A-99B:297

A-B:3

0
2012-09-26T18:50:48+03:00

100a+20+b-100b-30-a=287

99(a-b)=297

a-b=3

0