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Finding Solution for Consistent Pair of Linear Equations

Find the valu...

Question

Find the value of a if $(- 1, 1)$ is a solution of the equation $3 x - a y = 5$

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Solution

$\begin{matrix} W e h a v e (- 1, 1) i s t h e s o l u t i o n o f 3 x - a y = 5 s o, 3 (- 1) - a (1) = 5 - 3 - a = 5 a = 8 H e n c e, t h e v a l u e o f a i s - 8. \end{matrix}$

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