Everything you need to ace your CET.
Practice questions, video lessons, full mock tests, and progress analytics for UPCAT, ACET, DCAT, and USTET — all in one place.
UPCAT · Mathematics · Algebra
If 3x + 5 = 20, what is the value of x?
Correct!
3x + 5 = 20 → 3x = 15 → x = 5.
Prep for entrance exams from
5855
Practice questions
12
Video lessons
12
Full mock tests
16
Subjects covered
Choose your exam
Focused prep for the schools on your list.
Know exactly what to improve next.
CetPrep turns every completed mock test into a clear study plan—showing score trends, strongest topics, weakest areas, and the next lesson worth your time.
Explore analyticsScore trend
Across completed mocks
78%
234 of 300 correct
Needs improvement
Strongest topic
Keep this strength warm while focusing next on Algebra.
How it works
A simple path from choosing a test to feeling ready.
Pick your exam
Choose from UPCAT, ACET, DCAT, or USTET and see what it actually covers.
Practice by topic
Work through questions and short video lessons, subject by subject.
Take a full mock test
Simulate exam day with a timed, full-length test and a scored review.
Everything you need, in one place
Practice questions
Thousands of questions by subject and topic, each with a full explanation.
Video lessons
Short video walkthroughs that break down tricky topics step by step.
Full mock tests
Timed, full-length simulations of the real CET so test day feels familiar.
Progress analytics
See score trends, strongest topics, weakest areas, and the best next step.
Community comments
Stuck on a question? Discuss it with other reviewees right on the page.
Frequently asked questions
Yes — every practice question, video lesson, mock test, and analytics insight is free, with no ads and no paywalled content. CetPrep is an open-source project built by students, for students.
The Philippines' Big 4 college entrance exams: UPCAT (UP), ACET (Ateneo), DCAT (DLSU), and USTET (UST). Each exam has its own subjects, topics, and full-length mock test.
Mock tests are timed and simulate the real exam format. When you submit, your answers are graded automatically and you get a full breakdown of which questions you got right or wrong, with explanations.
Every completed mock test updates your score trend, strongest topics, weakest areas, and recommended next topic. Results stay private to your account.
Yes — every practice question has a comment thread where you can ask for help or explain your reasoning to other reviewees. You'll need a free account to post.
You can browse and answer practice questions without an account. Signing up (free) unlocks mock tests, saved progress, and commenting.
Start with one exam, then build momentum every week.
Pick your target school, practice by topic, and use your first mock tests to see what needs work before exam season gets loud.