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What is the correct solution status for the equations (12x-7y+29=0) and (36x-21y+91=0)?

Answer and explanation

Correct answer: No solution

Here, \(a_1/a_2=12/36=1/3\) and \(b_1/b_2=(-7)/(-21)=1/3\), but \(c_1/c_2=29/91\), which is not equal to \(1/3\). Thus, \(a_1/a_2=b_1/b_2\ne c_1/c_2\), so the two lines are parallel and distinct. Therefore, the pair has no solution. Exam tip: First compare the ratios of the coefficients of x and y, and then compare them with the ratio of the constant terms.

Related tags

Linear EquationsSolvability ConditionsParallel LinesNo SolutionClass 10ExpertConditions For SolvabilityPair Of Linear Equations In Two Variables

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