# OCME · Knowledge & practice explorer

302 MKO / 1,441 families / 360 batches / 36,000 questions.

36,000 second-context math/bilingual reviewed; 0 display/symbol-checked candidates. Source questions: candidate. English: ai_candidate. No new proof, Lean, SREG or training.

1 results; page 1/1.

## Question 7853: Reversible Row Addition and Before/After Classification

- ID: `q-20261012-advance-20261016-r05-system-linear-equations-0053`; number: 7853
- Processing: second_context_reviewed
- MKO: [mko-system-linear-equations](/en/mko/mko-system-linear-equations/)
- Family: [qf-density16-system-eliminate-row](/en/explore/?family=qf-density16-system-eliminate-row)
- Batch: [batch-20261012-advance-20261016-r05-system-linear-equations-foundations](/en/explore/?batch=batch-20261012-advance-20261016-r05-system-linear-equations-foundations)
- [Derivation](/en/questions/q-20261012-advance-20261016-r05-system-linear-equations-0053/) / [Markdown](/en/questions/q-20261012-advance-20261016-r05-system-linear-equations-0053/index.md) / [JSON](/data/question-derivations/questions/q-20261012-advance-20261016-r05-system-linear-equations-0053.json)