Distribusi kiri [f(x)+g(x)]h(x) = [ + + ⋯ = + ⋯ 0 + + + ⋯ + + ⋯ 0 0 1 1 ( + + ⋯ + + ⋯ ) 1 0 = [( + ) + + + ⋯ + + + ⋯ ] 1 1 0 0 ( + + ⋯ + + ⋯ ) 0 1 = ( + + ⋯ + + ⋯ ) 1 0 Dengan = σ + = ( + ) = σ + = ( + ) σ + = ( + ) , ∈ dan