Răspuns :
a+b+c=393
a:b=5 r 2 =>a=5b+2
c:b=3 r 4=>c=3b+4
5b+2+b+3b+4=393
5b+b+3b=393-2-4
a:b=5 r 2 =>a=5b+2
c:b=3 r 4=>c=3b+4
5b+2+b+3b+4=393
5b+b+3b=393-2-4
a=5b+2
c=3b+4
a+b+c=393
5b+b+2+3b+4=393
9b=393-6
b=387:9
b=43
a=5*43+2
a=217
c=3*43+4
c=133
c=3b+4
a+b+c=393
5b+b+2+3b+4=393
9b=393-6
b=387:9
b=43
a=5*43+2
a=217
c=3*43+4
c=133