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If (a=2) and (b=3), what is the value of (2a+b)?
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Answer and explanation
Correct answer: 7
Substitute the given values: \(2a+b=2\times2+3=4+3=7\). Therefore, the correct answer is 7. Getting 6 may result from an error in the order of multiplication and addition. Exam tip: substitute the values of variables first, then perform multiplication before addition.
Frequently asked questions
What is the correct answer to this question?
7
Why is this the correct answer?
Substitute the given values: \(2a+b=2\times2+3=4+3=7\). Therefore, the correct answer is 7. Getting 6 may result from an error in the order of multiplication and addition. Exam tip: substitute the values of variables first, then perform multiplication before addition.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Introduction to Polynomials. Topic: Algebraic expressions.
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