Algebra: Solving the Unknown
Like Duolingo, but for Algebra: Solving the Unknown. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
For the part of you with thirty open tabs that never became anything.
Free during early access · No credit card · iPhone & Android

Key ideas in Algebra: Solving the Unknown
- An equals sign means both sides have the exact same total value
- Opposite actions undo each other to leave the variable by itself
- Changing only one side destroys the balance between the two expressions
- Every mathematical action has a specific partner that cancels it out
- Different looking groups of numbers can share the same total weight
- The equals sign describes a relationship of identity, not a sequence of events
- You must mirror every change on both sides at the same time
- The goal is to strip away numbers until only the unknown is left
- Choosing the correct operation to isolate a variable
- Understanding the meaning of the equals sign between different expressions
- The sequence of maintaining balance while solving
- Any math operation is allowed as long as it is applied to both sides
- Doing different things to each side tips the scale
- Identifying valid moves that preserve equation balance
- Subtract the added amount first to clear the outer layer
- Dividing early forces you to divide every single part of the equation
You've tried the other tabs
Thirty open tabs. Four facts you actually kept.
You watched. You nodded. By Sunday it was gone.
One answer, then back to scrolling.
Eight weeks. You meant to finish. You didn't.
Tomo gives Algebra: Solving the Unknown the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.
Here's what playing it feels like
A real question from this course. Take your best guess.
If you want to isolate a variable, what is the most effective way to clear away the numbers surrounding it?
Get it right to open this lesson and 53 more in the app.
Where Algebra: Solving the Unknown takes you
Move beyond basic arithmetic to master the art of finding hidden values. Learn to balance complex equations, visualize patterns on a grid, and predict outcomes using mathematical logic.
- 1
Cracking the Code of Equations
- Balancing Both Sides of the Scale
- Undoing Multiple Operations in Order
- Handling Variables on Both Sides
- Working with Fractions in Equations
- Grouping Terms to Simplify the Puzzle
- 2
Visualizing Relationships on a Map
- Plotting Points and Finding the Slant
- The Starting Point and the Rate of Change
- Drawing Lines from Written Rules
- Finding Where Two Paths Cross
- 3
Powers and Hidden Patterns
- Multiplying Variables with Exponents
- The Logic of Negative Powers
- Breaking Large Expressions into Smaller Parts
- Solving Equations with Squared Terms
- Recognizing Common Number Patterns
- Dealing with Square Roots in Algebra
- 4
The Logic Behind the Rules
- Why We Can Swap and Group Numbers
- The Power of Distributing Values
- How Inequalities Change the Game
4 sections · 18 units · 54 levels. Built to play, not to enroll.
You pick the voice
Algebra: Solving the Unknown is taught in the The Bestie style: your friend who just gets it. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.
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Start Algebra: Solving the Unknown today.
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