Digital library
Textbooks, references and open learning resources.

External
College Algebra
Jay Abramson · Arizona State University
In the contents: 1.02: Real Numbers - Algebra Essentials · 2.03: Linear Equations in One Variable · 2.08: Linear Inequalities and Absolute Value Inequalities

External
Calculus - Early Transcendentals
LibreTexts · LibreTexts
In the contents: 3.10: Linear Approximations and Differentials · 7.06: Integration Using Tables and Computer Algebra Systems · 9.05: Linear Equations

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Math C: Intermediate Algebra
Mindy Carr · Mission College
In the contents: 01: Solving Linear Equations · 1.01: Use a General Strategy to Solve Linear Equations · 1.05: Solve Linear Inequalities

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Fundamentals of MATLAB Programming
Zara Noroozi · Irvine Valley College
In the contents: 13: Linear Algebra · 13.02: Why Linear Algebra Matters · 13.16: Linear Algebraic Equations

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Yet Another Introductory Number Theory Textbook - Cryptology Emphasis
Jonathan A. Poritz · Colorado State University – Pueblo
In the contents: 1.02: Algebraic Operations with Integers · 2.02: Linear Congruences

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Colege Algebra
Thomas Reed · Palo Alto College
In the contents: 1.02: Real Numbers - Algebra Essentials · 5.02: Systems of Linear Equations - Two Variables

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Elementary Algebra
LibreTexts · LibreTexts
In the contents: 02: Linear Equations and Inequalities · 2.01: Introduction to Algebra · 2.02: Simplifying Algebraic Expressions

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MC: Physics 121 - General Physics I
Charles Collett · Muhlenberg College
In the contents: 3.06: Algebra of Vectors · 3.07: Algebra of Vectors Examples · 10: Linear Momentum and Collisions

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MTH 098 Elementary Algebra
LibreTexts
In the contents: 1.1: Prelude to Foundations of Algebra · 1.3: The Language of Algebra and the Order of Operations · 2: Solving Linear Equations and Inequalities

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Introductory Statistics
Barbara Illowsky & Susan Dean · De Anza College
In the contents: 03: Introduction to Linear Regression and Correlation · 3.01: Linear Equations · 3.03: Simple Linear Regression

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Abstract Algebra I
Pamini Thangarajah · Mount Royal University
In the contents: 1.5 Linear Congruence

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Symmetry
Claire Vallance · University of Oxford
In the contents: 1.16: Symmetry Adapted Linear Combinations (SALCs)

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Calculus I Notes
Kevin Palencia · Northern Illinois University
In the contents: 3.02: Linear Approximation · 5.5.05: Other Options for Finding Algebraic Derivatives · 5.10.04: Linearization- Tangent Planes and Differentials

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Advanced Algebra
Anonymous · LibreTexts
In the contents: 01: Algebra Fundamentals · 1.0E: 1.E: Algebra Fundamentals (Exercises) · 1.04: Algebraic Expressions and Formulas

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GSU-TM-Introductory Physics II (1112)
Taha Mzoughi · Georgia State University
In the contents: 2.07: Solving Linear Equations and Inequalities · 2.7.04: Solving a System of Linear Equations · 2.7.05: Solving a System of Linear Equations with Cramer's Rule

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MTH 15: Applied Calculus I
LibreTexts
In the contents: 1.03: Linear Functions

External
Support Course for Elementary Statistics: ISP
Larry Green · Lake Tahoe Community College
In the contents: 4.01: Evaluate Algebraic Expressions · 4.02: Solving Linear Equations in One Variable

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Math in Society
David Lippman · Pierce College
In the contents: 8.02: Linear (Algebraic) Growth

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Math 75X: Introduction to Mathematical Reasoning
J. Maureen Kearns · Honolulu Community College
In the contents: 04: Fundamentals of Algebra · 4.03: Evaluating (NOT Solving) Algebraic Expressions · 4.04: Simplifying (Still Not Solving) Algebraic Expressions)

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The Essence of Mathematics Through Elementary Problems
Alexandre Borovik & Tony Gardiner · University of Manchester & University of Birmingham
In the contents: 1.01: Mental Arithmetic and Algebra · 04: Algebra · 4.01: Simultaneous linear equations and symmetry