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While solving a pair of linear equations in two variables by the elimination method, in which situation can one variable be eliminated directly?

Answer and explanation

Correct answer: जब किसी एक चर के गुणांक बराबर परन्तु विपरीत चिह्न वाले हों

In elimination, adding equations cancels coefficients with equal magnitude and opposite signs, such as \(3x\) and \(-3x\), since their sum is \(0\). Equal constants alone do not eliminate a variable. Exam tip: first align one variable’s coefficients.

Related tags

Linear EquationsElimination MethodAlgebraic MethodsClass 10 MathematicsSimultaneous EquationsAlgebraic Methods: Substitution Method And Elimination Method.Algebraic Methods Substitution Method And Elimination MethodPair Of Linear Equations In Two V

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