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Solving Simultaneous Linear Equation Using Cramer's Rule

solve x+3y=...

Question

solve $x + 3 y = 24 2 x + 4 y = 36$

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Solution

$x + 3 y = 24 x = 24 - 3 y 2 x + 4 y = 36 x + 2 y = 18 x = 18 - 2 y 24 - 3 y = 18 - 2 y y = 6 ⟹ x = 6$

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solve 4/ x+3Y= 8,6/ x- 4 y=-5

\begin{matrix} \frac{4}{x} + 3 y = 8 \frac{6}{x} - 4 y = - 5 \end{matrix}

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5 x + y = 36 x + 3 y = 10

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