Question

if a1/3+b1/3+c1/3 =0 then find a+b+c

Answer 1

a1/3+b1/3+c1/3=0
=>a/3+b/3+c/3=0
=>(a+b+c)/3=0
=>a+b+c=0/3
=>a+b+c=0

Answer 2

HERE
a1/3+b1/3+c1/3 =0
or,(3a+1)/3+(3b+1)/3+(3c+1)/3=0
or,(3a+1+3b+1+3c+1)/3=0
or,3a+3b+3c+3=0
or,3(a+b+c)=-3
     a+b+c=-1