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What is the simplest form of the expression 6x − 2x?

Answer and explanation

Correct answer: 4x

6x and 2x are like terms because both contain x to the first power. Therefore, subtract their coefficients: 6 − 2 = 4. Hence, 6x − 2x = 4x. The option 4x² is incorrect because adding or subtracting like terms does not change the variable’s exponent. Exam tip: identify like terms first, and then operate only on their coefficients.

Related tags

AlgebraLike TermsLinear ExpressionsSubtractionGeneral Chapter PracticeCommon QuestionsCommonMathematics

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