← Back to Warm-ups

🔍 Equation Detective

Spot the flaw in this worked solution

Sign Error
Student's Work
Step 1 3x - 5 = 10
Step 2 3x = 10 - 5
Step 3 3x = 5
Step 4 x = 1
What Went Wrong
Sign error: when moving -5 to the other side, it becomes +5. The correct step is 3x = 10 + 5 = 15.
Correct Answer
x = 5

🍎 Teacher Options & Printing

▼

K-W-L Prompts (for PDF):

Include in PDF

Customize these prompts however you like, or clear them entirely.