lean_workbook_plus_76298
ProvedFrom we take that , and .
Preamble
import Mathlib.Analysis.Complex.Basic
Formal statement
theorem lean_workbook_plus_76298 {a b c : ℝ} (h : a + b * c = b + c * a ∧ b + c * a = c + a * b) : (a - b) * (c - 1) = 0 ∧ (b - c) * (a - 1) = 0 ∧ (c - a) * (b - 1) = 0 := by sorrySource