Scholars trail · ages 13–15
Solve for x: free algebra practice
Solving equations is the heart of algebra. The idea is simple: do the same thing to both sides until x is on its own.
Number Quest gives quick one-step equation practice with all four operations (two-step equations are on the Masters trail) and shows the step in the explanation.
No sign-up, no ads. Works in any browser.
What the questions practise
- Equations like x + 5 = 12 and x − 9 = 4
- Equations like 4x = 28 and x ÷ 3 = 6
- Checking by substitution
Try some example questions
Tap a question to see the answer and how it works.
1. Solve for xSolve: 5 + x = 15122010-10
Answer: 10. x = 15 − 5 = 10.
2. Solve for xSolve: x − 20 = 626-14627
Answer: 26. x = 6 + 20 = 26.
3. Solve for xSolve: 4x = 1614542
Answer: 4. x = 16 ÷ 4 = 4.
Tips for parents and teachers
- Always check by putting the answer back in.
- Undo operations in reverse order.
- Use Practice until each step feels natural.
Why Number Quest
Free, with no ads and no in-app purchases. Five trails from age 5 to 16+, five ways to play, a daily goal that builds a streak, buddies to unlock and a friendly weekly leaderboard. Questions are made fresh on the device, so there is always something new.
An Android app on Google Play is coming soon. Until then, play free right here in your browser.