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2014-10-18T21:02:35+03:00
A+b=21
a:b=4 rest 1
a=b*4+1
b*4+1+b=21
5*b=21-1
5*b=20
b=20:5
b=4
a=4*4+1
a=16+1
a=17
50 4 50
2014-10-18T21:02:40+03:00
A+b=21
a:b=4 rest 1 -> a=4b+1
Inlocuiesti in prima ecuatie:
4b+1+b=21
5b=21-1
5b=20
b=20:5=4
a=21-4=17
18 4 18