| جلسهی هفتم: حل سیستم معادلات خطی | Lecture Seven: Solving a system of linear equations |
| ✓ یک معادله، یک مجهول ✓ دو معادله، دو مجهول ✓ چند معادله، چند مجهول ✓ دو معادله، سه مجهول ✓ دو معادله، چهار مجهول | ✓ One equation, one unknown ✓ Two equations, two unknowns ✓ Multi-equation, several unknowns ✓ Two equations, three unknowns ✓ Two equations, four unknowns |