Alena TumanovaMath lessons
ALGEBRA BASICS LESSON 01

Linear equations,
made clear.

Understand the balance rule, practice at your own pace, and save a record of your work.

Beginner15–20 minutes10 questions
Start learning
ONE EQUATION. ONE UNKNOWN.
3x + 5=17
3x=12
x=4
Keep both sides balanced.
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01

A QUICK EXPLANATION

Learn the idea

What is a linear equation?

A linear equation contains a variable (such as x) whose highest power is 1. Solving it means finding the number that makes both sides equal.

The balance rule

Whatever you do to one side of an equation, you must do to the other side.

Let's solve one together

  1. 3x + 5 = 17Start with the equation.
  2. 3x = 12Subtract 5 from both sides.
  3. x = 4Divide both sides by 3.
Check: 3 × 4 + 5 = 17. Both sides are equal, so x = 4 is the solution.
02

LET'S PRACTICE

Show what you know

PART A4 points

Match each math term

Choose the correct definition for every term. Tap to select — no dragging required.

PART B6 points

Solve for x

Write the value of x in each box. Use the hint if you get stuck.

QUESTION 01
x + 7 = 15

QUESTION 02
3x = 21

QUESTION 03
2x − 5 = 11

QUESTION 04
5x + 4 = 2x + 19

QUESTION 05
4(x − 2) = 2x + 10

QUESTION 06
x + 32 = 7

03

YOUR LEARNING RECORD

Finish & save

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