For solving the simultaneous equations \(x + y = 3\), \(3x - 2y = 4\). Find the value of determinant D.

Q.1 (A)(i) For solving the simultaneous equations \(x + y = 3\), \(3x - 2y = 4\). Find the value of determinant D.

A. 5

B. 1

C. –5

D. –1

Doubtly Asked 25 Oct 2026 ssc 10th Save WhatsApp Report

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Answer: C. –5

Answer: (C) –5

In the form \(ax + by = c\), the coefficients are \(a_1 = 1, b_1 = 1\) and \(a_2 = 3, b_2 = -2\).

\(D = \begin{vmatrix} 1 & 1 \\ 3 & -2 \end{vmatrix} = (1)(-2) - (1)(3) = -2 - 3 = -5\).

Doubtly AI · 25 Oct 2026 AI-verified · Oct 2026 Report

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