Question

решите систему уравнений

Answer 1

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

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

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

$y=-6$

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

$x=8$

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

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

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

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