Răspunsuri

2014-03-10T17:56:31+02:00
53-33=20 c
53-38=15 a
20+15=35
53-35=18 b
15+18+20=53

2014-03-10T18:01:51+02:00
53-33=20=>C B+20=38 B=18 A+18=33 A=15 15+18+20=53