Răspunsuri

2014-11-05T20:28:38+02:00
A-b=139  a : ( 2*b) = 10 r 6
a = 10 *2*b+6
a=20b+6
20b+6-b=139
19b+6=139
19b=139-6
19b=133
b=133:19
b=7
a=20b+6
a=20*7+6
a=140+6
a=146