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Question 6663: Original Rational Equation Sides and Defect

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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R0012-06663 · q-20261010-advance-20261014-r03-equation-0013

Original question and givens

Use the original equation’s common rational domain. L(x)=((0)x+(13))/(3), R(x)=(-1)x+(-12), q≠0, x=13/2. Give (L, R, L−R, does the original equation hold?). Use exact reduced fractions with positive denominators, retaining /1 for integers.

  • G001 — Use the original equation’s common rational domain. L(x)=((0)x+(13))/(3), R(x)=(-1)x+(-12), q≠0, x=13/2. Give (L, R, L−R, does the original equation hold?). Use exact reduced fractions with positive denominators, retaining /1 for integers.

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

common rational domain with original equation definitions

After

evaluate/classify the given model without enlarging its original domain

Conditions: none

Original definedness precedes substitution and transformations.Check the declared model,not arbitrary equation solving inferred from cross multiplication or one-point values.

Step identifiers and dependencies

Rule: original_rational_equation_scope · Uses: G001

S002 · calculation

Before

original left numerator linear product := mul(0, 13/2)

After

original left numerator linear product = 0

Conditions: none

Substitute the specified x into this side's coefficient product.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S001

S003 · calculation

Before

original left numerator affine value := sum(0, 13)

After

original left numerator affine value = 13

Conditions: none

Then add this side's own constant,not the other side's.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S002

S004 · calculation

Before

original right linear product := mul(-1, 13/2)

After

original right linear product = -13/2

Conditions: none

Substitute the specified x into this side's coefficient product.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S003

S005 · calculation

Before

original right affine value := sum(-13/2, -12)

After

original right affine value = -37/2

Conditions: none

Then add this side's own constant,not the other side's.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S004

S006 · calculation

Before

original left quotient := div(13, 3)

After

original left quotient = 13/3

Conditions: none

The original constant denominator q is nonzero;negative q is also handled exactly.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S005

S007 · calculation

Before

original two-side residual := sub(13/3, -37/2)

After

original two-side residual = 137/6

Conditions: none

Subtract the original right side from the original left;residual0 means the equation holds at this x.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S006

S008 · implies

Before

q=3≠0;x=13/2;L−R=137/6

After

original equation at this x=No

Conditions: none

This audits the legal original equation at the specified point;one-point agreement is not an identity for every x.

Step identifiers and dependencies

Rule: original_fraction_equation_point_check · Uses: G001, S007

Reverse checks

  • S008 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.
  • S007 · premise_and_result_audit — Recompute original two-side residual with exact rational arithmetic, not rounded decimals.
  • S006 · premise_and_result_audit — Recompute original left quotient with exact rational arithmetic, not rounded decimals.
  • S005 · premise_and_result_audit — Recompute original right affine value with exact rational arithmetic, not rounded decimals.
  • S004 · premise_and_result_audit — Recompute original right linear product with exact rational arithmetic, not rounded decimals.
  • S003 · premise_and_result_audit — Recompute original left numerator affine value with exact rational arithmetic, not rounded decimals.
  • S002 · premise_and_result_audit — Recompute original left numerator linear product with exact rational arithmetic, not rounded decimals.
  • S001 · premise_and_result_audit — Check against the original data and this step's premises; a one-way implication is not an equivalence.

Result

(13/3, -37/2, 137/6, No)

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: 53f41244468141df646188983600e72c25fd75f89c13c2f03eb7d64d3712e8b3
  • candidate record SHA-256: f2ab1341c991ae04be2b0e76d89bb05d441acbcfd756557839e77e0e559222b0
  • semantic review receipt SHA-256: 90dbc494b2d34ef51f412dcff63cfcc1a2215d038bff71f38f5dded4c64faf00
  • question-first witness SHA-256: b72a3b8bcf10f584396e0dd5198c657b0934a71864e5a3fa6321d7a613aef9f9
  • Lean: NOT_RUN · human review: NOT_PERFORMED
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