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BEGINNER
Variables & expressions
Understand unknown values, coefficients, and how to simplify expressions.
See an example →✦ YOUR MATH JOURNEY STARTS HERE
Make sense of math.
One step at a time.
Algebra doesn't have to be confusing. Explore clear examples, practice at your own pace, and discover how equations actually work.
✓ Learn at your pace✓ Step-by-step examples✓ Free practice
YOUR FIRST EQUATIONLET'S SOLVE IT
2x + 6 = 18
1
Subtract 6 from both sides2x + 6 − 6 = 18 − 6
2
Divide both sides by 22x ÷ 2 = 12 ÷ 2
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x = 6Check: 2(6) + 6 = 18
THE LEARNING LIBRARY
Find your next breakthrough.
Choose a topic and build your skills from the ground up.
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BEGINNER
Solving equations
Use inverse operations to find the value of an unknown variable.
See an example →÷
BEGINNER
Order of operations
Work through parentheses, exponents, multiplication, division, and more.
Practice now →↗
INTERMEDIATE
Slope & linear graphs
Discover what slope means and how equations turn into straight lines.
Open Graph Lab →≤
INTERMEDIATE
Inequalities
Compare expressions and learn when to reverse an inequality sign.
Practice now →x²
ADVANCED
Quadratic equations
Explore squared variables, parabolas, factoring, and solutions.
Explore examples →LEARN BY EXAMPLE
Math, broken into steps.
Follow the reasoning instead of memorizing a rule.
EXAMPLE 01 · ONE-STEP EQUATION
Solve: x + 7 = 12
We want to get x by itself. Undo the addition using subtraction.
- Start with x + 7 = 12.
- Subtract 7 from both sides.
- This gives x = 12 − 7.
- Our answer is x = 5.
x = 5
Check your answer: 5 + 7 = 12. Both sides match!
EXAMPLE 02 · TWO-STEP EQUATION
Solve: 3x − 4 = 11
Undo operations in reverse order: addition first, then multiplication.
- Start with 3x − 4 = 11.
- Add 4 to both sides: 3x = 15.
- Divide both sides by 3.
- Our answer is x = 5.
x = 5
Check: 3(5) − 4 = 15 − 4 = 11. Correct!
YOUR TURN
Practice makes progress.
Solve a problem, check your answer, and earn points.
INTERACTIVE PRACTICE
Can you solve it?
Choose a level, enter your answer, and check your work.
QUESTION 1
x + 4 = 10
YOUR SCORE
0 pts
Earn 10 points for each correct answer.
CORRECT ANSWERS
0
Keep practicing to improve.
STUDY TIP
Keep both sides balanced.
Whatever operation you perform on one side of an equation, perform on the other side too.
Your practice score is kept in this page while it is open. It is not a permanent account record.
EXPERIMENT & DISCOVER
Welcome to Graph Lab.
Adjust the numbers and watch the line change.
Explore y = mx + b
The slope (m) controls how steep the line is. The intercept (b) moves it up or down.
y = x
A positive slope rises from left to right.
✦ DAILY CHALLENGE
Ready for a bonus question?
A little challenge is a great way to sharpen your skills.
If 4x + 3 = 27, what is x?
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