| 929 | Find x from a duplicate ratio condition | Medium | Duplicate ratioProportion | |
| 931 | Number to add to a ratio | Medium | RatioAdjustment | |
| 932 | Proving an Algebraic Ratio Identity | Medium | ratioproportion+1 | |
| 933 | Continued Proportion Identity | Medium | continued proportionalgebraic manipulation+1 | |
| 934 | Symmetric Ratio Relation | Medium | ratiosymmetry+1 | |
| 936 | Fractional Sum with Cubes | Medium | ratiosubstitution+1 | |
| 937 | Reciprocal proportionality | Medium | proportionalitysymmetry | |
| 938 | Equality case of Cauchy–Schwarz | Medium | Cauchy–Schwarzproportionality | |
| 939 | Cyclic proportionality | Medium | cyclic symmetryratios | |
| 941 | Eliminate variables from a three‑equation system | Medium | determinantelimination | |
| 943 | Relation among three variables | Medium | systemssymmetry | |
| 949 | Coupled linear conditions | Medium | simultaneous equationssymmetry | |
| 956 | Proportion radical identity | Medium | proportionsratios | |
| 957 | Continued proportion identity I | Medium | continued proportionratios | |
| 958 | Continued proportion identity II | Medium | continued proportionratios | |
| 959 | Continued proportion identity III | Medium | continued proportionalgebraic identity | |
| 960 | Mean proportional algebraic relation | Medium | mean proportionalexponents | |
| 961 | Product proportion identity | Medium | proportionscomponendo and dividendo | |
| 962 | Solve rational equation | Medium | Rational equationsFactorisation | |
| 963 | Solve quartic rational equation | Medium | Rational equationsFactorisation | |
| 964 | Solve linear fractional equation | Medium | Cross‑multiplicationLinear equations | |
| 967 | Work‑men‑days proportion problem | Medium | ProportionWork problems | |
| 1180 | Rationalizing a Complex Quotient | Medium | rationalizationsurds | |
| 1199 | Product involving cube roots | Medium | Cube roots of unityPeriodicity of powers of omega | |
| 1200 | Power of binomials with omega | Medium | Cube roots of unityAlgebraic simplification | |
| 1202 | Sum of cubes factorization | Medium | Cube roots of unityPolynomial factorization | |
| 1293 | Radical Equation Solution | Medium | Algebraic manipulationRadical equations | |
| 1296 | Fractional Radical Equation | Medium | Cross-multiplicationRadical equations | |
| 1297 | Complex Radical Equation | Medium | Radical equationsSubstitution | |
| 1300 | Reciprocal Fractions Equation | Medium | Reciprocal substitutionAlgebraic simplification | |
| 1370 | Dividing 136 with Remainders | Medium | Diophantine equationsremainders | |
| 1371 | Purchasing Three Types of Animals | Medium | Diophantine equationsword problems | |
| 1372 | Coins in a Pocket | Medium | Diophantine equationscurrency word problem | |
| 1429 | Binomial coefficient sum relation | Medium | Binomial TheoremCombinatorial Identities | |
| 1431 | Weighted sum of binomial coefficients | Medium | Binomial TheoremIntegration | |
| 1432 | Sum of squared binomial coefficients | Medium | Binomial TheoremVandermonde's Identity | |
| 1498 | Coefficient Periodic Pattern | Medium | Generating FunctionsPower Series | |
| 1499 | Factorial Series Identity for Even n | Medium | Binomial CoefficientsCombinatorial Identities | |
| 1514 | Symmetric combinations of variables with omega (part 1) | Medium | Cube roots of unityAlgebraic identity | |
| 1515 | Symmetric combinations of variables with omega (part 2) | Medium | Cube roots of unityAlgebraic identity | |
| 1516 | Symmetric combinations of variables with omega (part 3) | Medium | Cube roots of unityAlgebraic identity | |
| 1531 | Alternating Binomial Coefficient Identity | Medium | Binomial TheoremCoefficient Extraction | |
| 1532 | Weighted Alternating Binomial Sum | Medium | Binomial TheoremDifferentiation | |