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Question 34107: Exact Order of Positive-Denominator Rationals

On this page
  1. Original question and givens
  2. Definition and scope
  3. Step-by-step derivation
  4. Reverse checks
  5. Result
  6. This question review and source binding

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R0067-34107 · q-20261005-advance-20261006-r01-order-relation-0007

Original question and givens

Under the usual real order, compare (7)/3 and (7)/3. Both denominators are positive. Give <, =, or > in that order.

  • G001 — Under the usual real order, compare (7)/3 and (7)/3. Both denominators are positive. Give <, =, or > in that order.

Definition and scope

Use the original question domain, assumptions and cited MKO definitions. This item has second-context mathematical and bilingual review, with the model, answer and every arithmetic step independently recomputed from the original parameters; the source question remains a candidate.

Step-by-step derivation

S001 · implies

Before

source roles = [qf-order-rational-comparison, [operation, p, q, r, s]]

After

derived = [rational_comparison, no-invented-domain]

Conditions: none

Check THIS bank’s keys/operation/domain:legacy table underscores,MOD50 local hyphens;permissive BASE data acquires no unknown-field restriction.Keep Number.isInteger and SAFE source guards distinct,while preserving ORIGINAL JSON number representations.

Step identifiers and dependencies

Rule: R67_SOURCE_specific_keys_operation_domain_and_numeric_bank · Uses: G001

S002 · calculation

Before

Order ORIGINAL first numerator times second positive denominator := mul(7, 3)

After

Order ORIGINAL first numerator times second positive denominator = 21

Conditions: none

Calculate exactly from ORIGINAL ordered operands.Legacy derived integers are not recapped at the RAW SAFE bound;MOD50 rationals separately retain the NAIVE pre-reduction source envelope.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S001

S003 · calculation

Before

Order ORIGINAL second numerator times first positive denominator := mul(7, 3)

After

Order ORIGINAL second numerator times first positive denominator = 21

Conditions: none

Calculate exactly from ORIGINAL ordered operands.Legacy derived integers are not recapped at the RAW SAFE bound;MOD50 rationals separately retain the NAIVE pre-reduction source envelope.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S002

S004 · implies

Before

source roles = [7, 3, 7, 3]

After

derived = [21, 21, =]

Conditions: none

Both denominators are POSITIVE,so multiplying by q*s preserves direction.Compare p*s with r*q.Equality includes unreduced equivalent fractions.Derived cross products are not recapped at RAW SAFE.

Step identifiers and dependencies

Rule: Order_POSITIVE_denominators_cross_products_preserve_direction · Uses: G001, S003

Reverse checks

  • S004 · premise_and_result_audit — Reverse-audit THIS step against the ORIGINAL roles,complete premises and field order.Distinguish implication from equivalence;preserve originals,English,MKOs,ASTs and review states.Finite checks are not independent review or general formal proof.
  • S003 · premise_and_result_audit — Recompute Order ORIGINAL second numerator times first positive denominator with exact rational arithmetic, not rounded decimals.
  • S002 · premise_and_result_audit — Recompute Order ORIGINAL first numerator times second positive denominator with exact rational arithmetic, not rounded decimals.
  • S001 · premise_and_result_audit — Reverse-audit THIS step against the ORIGINAL roles,complete premises and field order.Distinguish implication from equivalence;preserve originals,English,MKOs,ASTs and review states.Finite checks are not independent review or general formal proof.

Result

=

The full substitutions and premise checks give the original answer; source identity,format and status are unchanged.

This question review and source binding

Review date: 2026-10-26

Original questions, answers, step expressions, numeric ASTs and historical records are retained. Source candidate labels remain historical and are not overwritten as formal proof.

Source hashes and review receipts
  • input commit: 0f7be61e2c22317a4075561dc822c87d881a50db
  • original question SHA-256: b4a191c7e23855368a536787285ce236c86ad5338326ca81c3c540bfce11f55c
  • candidate record SHA-256: b83ae9c403689d554916db93eb26ac2aab5aa8ad4094d0a916e3c8391c1b4975
  • semantic review receipt SHA-256: c89efa383b67bb2cf25bcf16160b9f5f614bbe5e5e791f4d7f58234d17a3371c
  • question-first witness SHA-256: 12766d451c5375842b4fc2843ae94807ec55f15763a916558026912a13873d57
  • Lean: NOT_RUN · human review: NOT_PERFORMED
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