Notezi cu a,b,c numerele => b=2a;b=c- 14=> c= b+14;a=b/2=>a+b+c=b+b+b/2+14= 1229=>5b/2=1215=>b=1215 x 2/5=486=>a=243;c=500;
a --- ;
b --- ---;
c --- --- + 15;
a + b + c: --- --- --- --- --- +14= 1229=> --- = 1215/5= 243 = a; b= 243 x 2 = 486; c = 500