Question

решите систему уравнений

Answer 1

$left { {{3x+4y=2} atop {2x-5y=46}} right.$

$left { {{x=-frac{4}{3}y } atop {2x-5y=46}} right.$

$2(-frac{4}{3} )y-5y=46$

$y=-6$

$2x-5(-6)=46$

$x=8$

$( x , y) = (8 , -6)$

$left { {{3*8+4*(-6)=0} atop {2*8-5*(-6)=46}} right.$

$left { {{0=0} atop {46=46}} right.$

$( x, y)=( 8 , -6)$