Question

a*b*c*d*e + b*c*d*e*f + a*c*d*e*f + a*b*c*d*e*f + a*b*c*e*f + a*b*c*d*f= a*b*c*d*e*f and and a,b,c,d,e,f are all positive non repeating integers solve a,b,c,d,e,f

Answer 1

a*b*c*d*e +
b*c*d*e*f +
a*c*d*e*f +
a*b*c*e*f +
a*b*c*d*f +
a*b*c*d*e*f =
a*b*c*d*e*f

By the last 2 lines, all the previous lines add up to 0...

Answer 2

and since abcdef are positive, that's impossible...