This study notes covers Worked Example 1: Two-Step Equation within Linear Equations for GCSE Mathematics. Revise Linear Equations in Algebra for GCSE Mathematics with 16 exam-style questions and 12 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 3 of 4 in this topic. Use this study notes to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 3 of 4
Practice
16 questions
Recall
12 flashcards
Worked Example 1: Two-Step Equation
Solve: 3x + 7 = 22
Step 1 Subtract 7 from both sides
3x + 7 - 7 = 22 - 7
3x = 15
Step 2 Divide both sides by 3
3x ÷ 3 = 15 ÷ 3
x = 5
Check Substitute back
3(5) + 7 = 15 + 7 = 22 ✓
Answer:
x = 5