Răspuns :
a+b+c=300
a+13=k a=k-13
b+6=k b=k-6
c+8=k c=k-8
a+b+c=300
k-13+k-6+k-8=300
3k=300+13+6+8
3k=327
k=327:3
k=109
a=109-13=96
b=109-6=103
c=109-8=101
a+13=k a=k-13
b+6=k b=k-6
c+8=k c=k-8
a+b+c=300
k-13+k-6+k-8=300
3k=300+13+6+8
3k=327
k=327:3
k=109
a=109-13=96
b=109-6=103
c=109-8=101
a+b+c=300
a+13=b+6=c+8
=>300+13+6+8=327
327 :3=109
=>a=109-13=96
b=109-6=103
c=109-8=101
a+13=b+6=c+8
=>300+13+6+8=327
327 :3=109
=>a=109-13=96
b=109-6=103
c=109-8=101