- 3,073

- 3

## Main Question or Discussion Point

Are there any natural number solutions for

A + B + C + D = A x B x C x D

besides

{1, 1, 2, 4}?

What class of equation does that above belong to?

A + B + C + D = A x B x C x D

besides

{1, 1, 2, 4}?

What class of equation does that above belong to?