Răspunsuri

2014-09-22T21:39:25+03:00
(20+8):4=28:4=7  cred ca asa se face :)
2014-09-22T21:44:48+03:00
(20+8):4=7
(10+2):4+(9+7):4=12:4+16:4=3+4=7