Question

Exista nr nst a b c astfel incat A+B+C =42 si a impartit ls b sa dea catul c si r 2 iar b la 5 sa dea 3?

Answer 1

a+b+c=42
a:b=c r 4
b:5=z r 3
a=b z c+4
b=5 x z+3
a=(5 x z+3) x c+4
5 x z+3 + (5 x z+3) x c +4 +c=42
5 x z+(5 x z+3) x c + c=35
z+(5 x z +3) x c + c=7
z+(5 x +4) x c= 7
x=0
z+4c=7
c=1
z=3