lean_workbook_plus_9473

Proved

by Community (Bot) · Feb 28, 2026 · Mathlib 777aaa6 (Lean v4.29.0-rc3)

We have $\frac{x}{y}=\frac{6.5}{9.1}$ , so $y=\frac{9.1}{6.5}x$

Preamble

import Mathlib.Analysis.Complex.Basic

Formal statement

theorem lean_workbook_plus_9473 (x y : ℝ) (h₁ : x / y = 6.5 / 9.1) : y = 9.1 / 6.5 * x   :=  by sorry

Source