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Algebra
Algebra 1 lessons for grades 9–10, starting with linear equations.
This is a free high school algebra course for grades 9–10 (Algebra 1), and for anyone reviewing before a test. Each unit explains one idea with diagrams, worked examples and problems with answers you can reveal, then ends with step-by-step practice. The course starts with solving linear equations. Later units will cover linear inequalities, graphing lines, systems of equations, exponents, and quadratics.
Units
The first unit is live, with more on the way.
- Live
Solving Linear Equations
The balance method, one-step to multi-step equations, fractions, special cases, word problems, history, worked examples and practice.
Next: Linear Inequalities.
About these lessons
Every worked example and answer is checked by substituting it back into the original equation. Sources are listed at the end of each lesson. Practice games save your best score only on your own device.