We now try a substitution to simplify. Let $ a = x - y > 0 $, $ b = y - z > 0 $, so $ x - z = a + b > 0 $. Then: - AMAZONAWS

📅 March 11, 2026 👤 scraface

Mar 11, 2026

$We now try a substitution to simplify. Let $ a = x - y > 0 $, $ b = y - z > 0 $, so $ x - z = a + b > 0 $. Then:$