Question

1549 номер 3)
Помогите

Answer 1

решение:
$left { {{12x+4y-1-y+2x=0} atop {8x-2y+19+x=0}} right.$
$left { {{14x+3y-1=0} atop {9x-2y+19=0}} right.$
$left { {{y= frac{1-14x}{3} } atop {9x- frac{2(1-14x)}{3} +19=0 }} right.$
$left { {{y= frac{1-14x}{3}} atop {27x-2+28x+57=0}} right.$
$left { {{y= frac{1-14x}{3}} atop {55x+55=0}} right.$
$left { {{y= frac{1-14x}{3}} atop {x= -1}} right.$
$left { {{y= frac{1+14}{3} } atop {x= -1}} right.$
$x =-1; y =5;$