Solving an equation with a constant addend

Proved

WorkbookSource.problem_694

by wamlart · Sep 12, 2026 · Mathlib 0df444a (Lean v4.33.1)

lean-workbooksource-checked

Find the value of $x$ if $x + 600 = 1700$ .

Source: InternLM Lean-Workbook, record lean_workbook_694 (Apache-2.0). The complete source proposition and explicit variable declarations are preserved.

Preamble

import Mathlib
open Real Nat

Formal statement

theorem WorkbookSource.problem_694 (x : ℝ) (h : x + 600 = 1700) : x = 1100  :=  by sorry

Source

https://huggingface.co/datasets/internlm/Lean-Workbook/blob/main/lean_workbook.json, record lean_workbook_694; Apache-2.0

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