Răspuns:
a+b+c= 864
a-x=124 b-x= 86 c-x=102
a=124+x b=86+x c= 102+x se inlocuiesc in suma
124+x + 86+x + 102+ x= 864
3x = 864 - 226- 86 = 638- 86= 552
3x= 552 => x= 552 :3= 184 x= 184
a=124+184=308 a= 308
b=86+184= 270 b=270
c=102+184=286 c= 286
Verificare : 308+270+286= 578 +286= 864
