Răspunsuri

2014-05-04T20:27:02+03:00
A+b+c=197
b=2a+5
c=2b
de unde rezulta ca  c=4a+10
a+2a+5+4a+10=197
7a+15=197
7a=182
a=26

b= 2 x 26+5=52+5=57
c= 57 x 2=114