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What is obtained after simplifying (4(2x-y)-3(x+2y)+5y)?

Answer and explanation

Correct answer: \(5x-5y\)

On expanding the brackets, \(4(2x-y)=8x-4y\) and \(-3(x+2y)=-3x-6y\). Thus, the expression becomes \(8x-4y-3x-6y+5y\). Combining like terms gives \((8x-3x)+(-4y-6y+5y)=5x-5y\). The distractor \(11x-5y\) can result from incorrectly treating \(-3x\) as positive. Exam tip: when a negative sign is outside a bracket, change the sign of every term inside it.

Related tags

Algebraic ExpressionsSimplifying ExpressionsDistributive PropertyLike TermsLinear ExpressionsIntroduction To PolynomialsMathematicsClass 9 Mcq

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