Răspunsuri

2014-05-04T22:44:05+03:00
2014-05-04T22:44:45+03:00
A+b=429
a=429-b
a=b/10
b/10+b=429
b+10b=429x10
11b=4290
b=4290/11
b=390
a=39
39 +390=429