Question

помогите пожалуйста​

Answer 1

Ответ: а) х=4, у=1. б) x=0, y=1/2.

Объяснение:

$\left \{ {{x+2y=6} \atop {x-4y=0}} \right.$

$\left \{ {{x=6-2y} \atop {6-2y-4y=0}} \right.$

$\left \{ {{x=6-2y} \atop {-6y=-6}} \right.$

$\left \{ {{x=6-2*1} \atop {y=1}} \right.$

$\left \{ {{x=4} \atop {y=1}} \right.$

$\left \{ {{3x+2y=1} \atop {6x+4y=2}} \right.$

$\left \{ {{2y=1-3x} \atop {6x+4y=2}} \right.$

$\left \{ {{y=(1-3x)/2} \atop {6x+4((1-3x)/2)=2}} \right.$

$\left \{ {{y=(1-3x)/2} \atop {6x+2-6x=2}} \right.$

$\left \{ {{y=(1-3*0)/2} \atop {x=0}} \right.$

$\left \{ {{y=1/2} \atop {x=0}} \right.$