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Which option gives the correct simplified form of (2a-3b+5a+7b-4a)?

Answer and explanation

Correct answer: \(3a+4b\)

Combine like terms in the expression: \(2a+5a-4a=3a\) and \(-3b+7b=4b\). Hence, the simplified form is \(3a+4b\). In \(11a+4b\), the negative sign of \(-4a\) has been ignored while combining the \(a\)-terms. Exam tip: add or subtract only terms having the same variable and exponent.

Related tags

Algebraic ExpressionsLike TermsLinear PolynomialsSimplificationCoefficientsIntroduction To PolynomialsMathematicsClass 9 Mcq

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