Question

suma a trei nr este 769. suma primelor doua nr este 495 ; iar suma ultimelelor doua este 600 . afla cele 3 nr

Answer 1

a,b,c-nr.
a+b+c=769
a+b=495=>a=495-b
b+c=600=>c=600-b
495-b+b+600-b=769
-b+b-b=769-495-600
-b=-326 |×(-1)
b=326
a=495-b
a=495-326
a=169
c=600-b
c=600-326
c=274

Answer 2

a+b+c=769
a+b=495
b+c=600

a=495-326=169
b=600-274=326
c=769-495=274