Răspunsuri

2014-05-11T12:24:15+03:00
A+b+c=396
a=b:2
a=c-31
a+2a+a+31=396
4a+31=396 / -31
4a=364
a=364:4
a=91
b=2*91
b=182
c=91+31
c=122