Free worked-solution library · Grades 6 to 12
See how one problem is solved, step by step.
EZ Math solves one problem per page. You get the answer first, then every step, then the common mistakes. Finally, five practice problems with hidden answers.
- Free, no account
- Every step explained
- Answers checked before publish
Choose a course
All courses-
Order of operations, negative numbers, ratios and rates.
Grades 6 to 8 3 topics · 5 examples
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Equations, systems of equations and linear functions.
Grades 8 to 9 3 topics · 5 examples
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Quadratics, factoring, exponents and radicals.
Grades 9 to 11 3 topics · 5 examples
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Triangles, circles, area and volume.
Grades 9 to 10 3 topics · 5 examples
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Right triangles, radians, the unit circle and sine waves.
Grades 10 to 12 3 topics · 5 examples
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Functions, logarithms, sequences and series.
Grades 10 to 12 3 topics · 5 examples
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Limits, derivatives and integrals.
Grades 11 to 12 3 topics · 5 examples
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Mean, median, range and probability.
Grades 11 to 12 2 topics · 5 examples
Start with Algebra 1
Open the Algebra 1 hubAlgebra 1 has the most search demand of the school courses. These examples cover equations, systems and lines.
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How to Solve 2x + 3 = 11
Solve the two-step equation 2x + 3 = 11 in four steps. See the answer, why each step is allowed, and the mistakes to avoid.
4 steps · 5 practice problems
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How to Solve an Equation with Variables on Both Sides
Solve 5x - 4 = 3x + 8 in five steps. Collect the variables on one side, then check the answer in the original equation.
5 steps · 5 practice problems
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How to Solve a System of Equations by Substitution
Solve y = 2x + 1 and 3x + y = 11 by substitution. Five steps, the reason for each one, and the substitution mistakes to avoid.
5 steps · 5 practice problems
How each page works
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Problem and answer
Read the problem and the one-line answer.
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Numbered steps
Follow the steps. Each one does one action and says why it is allowed.
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Common mistakes
Check the mistakes students make most often.
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Practice
Try five practice problems. Answers are one click away.
Every problem is written for EZ Math. The math is checked before publish. You can also try the textbook-style practice sets.