Question detail
exam warm-up: simplify 3x + 4x by collecting like terms.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Structure and calculation
Question
- A. 7x
- B. 8
- C. 6
- D. 14
Answer
The correct answer is 7x.
Explanation
The locked answer is 7x. Work through the given values, keep one operation per line, and check the final step reaches 7x.
Common mistake
Inverse operations and priority of operations common mistake 1
Writing a final answer without showing the method that justifies it. This can weaken answers for: [Foundation and Higher] Use relationships between operations, including inverse operations, to simplify calculations and expressions..
Show the method first, then give the final answer in the required form. Apply this directly to Inverse operations and priority of operations.
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