Răspunsuri

2014-06-11T13:39:45+03:00
A+b=21
a-b=b/3

a=b/3+b
b/3+b+b=63
b+3b+3b=63
7b=63
b=63:7
b=9

a=9/3+9
a=3+9
a=12
1 4 1