Beginbmatrix 2 x-y - 4 x5 x-7 - 4 xend bmatrix - begin bmatrix 7 - 7 y-13 -y - x-6lend bmatrix - then the value of x-y isa x-3- y-1b x-2- y-3c x-2- y-4d x-3- y-3

We have 4x = x + 6 ⇒ = 2 and 4x = 4y 13 ⇒ 8 = 7y 13 ⇒ 7y = 21 ⇒ y = 3 ∴ x + y = 2 + 3 = 6 ...

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Sum of n Terms

beginbmatrix ...

Question

$[\begin{matrix} 2 x + y & 4 x 5 x - 7 & 4 x \end{matrix}]$ = $[\begin{matrix} 7 & 7 y - 13 y & x + 6 \end{matrix}]$ , then the value of x + y is
(a) x = 3, y = 1
(b) x = 2, y = 3
(c) x = 2, y = 4
(d) x = 3, y = 3

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[\begin{matrix} x + y & y 2 x & x - y \end{matrix}] [\begin{matrix} 2 - 2 \end{matrix}] = [\begin{matrix} 32 \end{matrix}]

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[\begin{matrix} x + y & 2 1 & x - y \end{matrix}] = [\begin{matrix} 3 & 2 1 & 7 \end{matrix}]

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2 [\begin{matrix} x & 5 7 & y - 3 \end{matrix}] + [\begin{matrix} 3 & - 4 1 & 2 \end{matrix}] = [\begin{matrix} 7 & 6 15 & 14 \end{matrix}]

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