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Find free step-by-step solutions for university textbooks at litsolutions.org—search by title, author, or ISBN across math, physics, chemistry, engineering, and CS, with no account required.

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Details below the decision summary—features, workflow, and scope notes.
Reviewed on 23 August 2026 · Litsolutions — official site
Step-by-step solutions
Worked solutions that show the process behind each answer, helping you understand how problems are solved.
Textbook search
Find your textbook by entering the title, author, or ISBN, then navigate chapters and problem numbers.
STEM coverage
Solutions across engineering, mathematics, physics, chemistry, computer science, and biology.
No account required
Browse and view solutions without registration or providing personal credentials.
Direct links
Generate direct links to the exact worked solution for a given chapter and problem number.
Homework help
Use it to check your work, study for exams, or unstick yourself on tough textbook problems.
Search for your textbook
Enter the textbook title, author, or ISBN to locate the book in the database.
Select the chapter
Open the book and navigate to the chapter you are currently working on.
Choose the problem number
Pick the exact problem number, such as Problem 4C, from the chapter listing.
Generate and review the solution
Generate the solution link, verify you are human if prompted, and review the worked steps against your class notes.
University STEM students
Get step-by-step help on engineering, math, physics, chemistry, and CS textbook problems.
Self-study learners
Check your work and understand problem-solving approaches without paying for tutoring.
Exam preparers
Review worked examples from your course textbooks before tests and finals.
Homework helpers
Unstick yourself on tough problems and verify that your answers match the worked solution.