Question

Solve 2x+3y=1and3x+4y=1 by cross product method

Answer 1

Answer:

$\frac{x}{ - 3 + 4} = \frac{y}{ - 3 + 2} = \frac{1}{8 - 9} \\ \frac{x}{1} = \frac{y}{ - 1} = \frac{1}{ - 1} \\ x = - y = - 1 \\ so \: x = - 1 \: \: \: and \: \: y = 1 \\ ans.$