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Excel in math and science

Master concepts by solving fun, challenging problems.

It's hard to learn from lectures and videos

Learn more effectively through short, interactive explorations.

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Excel in math and science

Master concepts by solving fun, challenging problems.

It's hard to learn from lectures and videos

Learn more effectively through short, interactive explorations.

Used and loved by over 7 million people

Learn from a vibrant community of students and enthusiasts,
including olympiad champions, researchers, and professionals.

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That seems reasonable. Find out if you're right!

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Solving Equations

Intro

Concept Quizzes

Warmup
Balanced Scales
Setting Up Equations
Simple Equations
Multi-Step Equations
Isolating a Variable
Solve by Substitution
Solve by Elimination

Challenge Quizzes

Level 1
Level 2

Balances Warmup

How many red squares should be placed on the right side of the bottom scale in order to make it balance?

4 6 8 9 12

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by Brilliant Staff

How many red squares should be placed on the right side of the bottom scale in order to make it balance?

3 4 5 6 8

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by Brilliant Staff

What should be placed on the right side of the bottom scale in order to make it balance?

4 Yellow Triangles 5 Yellow Triangles 24 Blue Circles 25 Blue Circles

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by Brilliant Staff

What should be placed on the right side of the bottom scale in order to make it balance?

3 Green Pentagons 4 Green Pentagons 4 Yellow Triangles 5 Yellow Triangles

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by Brilliant Staff

How many blue circles should be placed on the right side of the lower scale to make it balance?

1 2 3 6 8

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by Brilliant Staff

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