Question

solve 2x +y=4 and 2x-y=4 by cross multiplication method.

Answer 1

$\frac{x}{8} = \frac{y}{0} = \frac{ - 1}{ - 4}$
$y = \frac{ - 1 \times 0}{ - 4}$
$y = 0$
$x = \frac{ - 1 \times 8}{ - 4}$
$x = 2$
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