Question 1
Question detail
calculator check: solve 3x + 5 = 20.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Notation, vocabulary and manipulation
Question
- A. x = 5
- B. 2x
- C. 1x^2
- D. 1x
Answer
The correct answer is x = 5.
Explanation
calculator check uses Identities and algebraic proof: identify the quantities, do the stated operation, and select x = 5 because it matches the verified final answer.
Common mistake
Identities and algebraic proof common mistake 1
Writing a final answer without showing the method that justifies it. This can weaken answers for: [Foundation and Higher] Know the difference between an equation and an identity..
Show the method first, then give the final answer in the required form. Apply this directly to Identities and algebraic proof.
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